W&H Impex
* Multiflex® is a registered trade mark of Kaltenbach & Voigt GmbH, Germany
** also with other coupling versions available
*** Contra-angle handpieces of the Synea Vision Short Edition can be used on micromotors with an ISO coupling length of 23 mm or less.
**** Add-on control MF-100: Currently not available in North America
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Alegra Straight and Contra-angle Handpieces without light
Outer diameter of the sheath: 20 mm
Small head and ergonomic design
The Alegra straight or contra-angle handpiece is comfortable in the hand. Thanks to the excellent ergonomics, the straight and contra-angle handpieces from W&H prevent excessive strain on your hands during preparation. The small contra-angle head allows optimal view of the treatment site.
Your advantages at a glance
- Robust and durable
- Ergonomic design
- Simple bur changing with the push-button chucking system
- Thermo washer disinfectable and sterilizable
- External coolant supply (spray clip, coolant hose, nozzle cleaner) available as accessories
Thermo washer disinfectable and sterilizableThermo washer disinfectable
Sterilizable
Alegra straight and contra-angle handpieces are thermo washer disinfectable and sterilizable.
Perfect balancePerfect balance
The dental straight handpiece or dental contra-angle handpiece is comfortable in the hand and is perfectly balanced with the micro air motor.
Excellent ergonomicsFatigue-free operation
The easy 360° rotation of the Alegra straight or contra-angle handpiece on the micro air motor, the low overall weight and the slender design ensures fatigue-free operation.
![Alegra dental contra-angle handpiece WE-56]( "Alegra dental contra-angle handpiece WE-56")
WE-56
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 20 mmWE-56
REF 30116000Contra-angle handpiece 1:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.8 mm
![Alegra dental contra-angle handpiece WE-57]( "Alegra dental contra-angle handpiece WE-57")
WE-57
Dental contra-angle handpiece with
push-button chucking system,
for FG burs with Ø 1.6 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 20 mmWE-57
REF 30117000Contra-angle handpiece 1:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 22.7 mm
![Alegra dental contra-angle handpiece WE-66]( "Alegra dental contra-angle handpiece WE-66")
WE-66
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 20 mmWE-66
REF 30118000Contra-angle handpiece 4:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.8 mm
![Alegra dental straight handpiece HE-43]( "Alegra dental straight handpiece HE-43")
HE-43
Dental straight handpiece with
twist tension chucking system, for handpiece and contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 20 mmHE-43
REF 30119000Straight handpiece 1:1
An external coolant supply (spray clip, coolant hose, nozzle cleaner) for Alegra straight and contra-angle handpieces without light is available as accessories.
Alegra Contra-angle Handpieces with LED+ light
Outer diameter of the sheath: 20 mm
More colour. More contrast. LED+
LED+ contra-angle handpieces from W&H offer an incomparably high colour rendering index (CRI). The self-generated LED light is of daylight quality, renders colours naturally and is many times brighter than a conventional halogen light.
Your advantages at a glance
- Independent sterilizable LED light
- High colour rendering index of more than 90
- Robust design
- Thermo washer disinfectable and sterilizable
Daylight quality LED+Visual clarity
A high CRI value significantly improves people‘s sense of wellbeing and ensures greater visibility. Perfect colour rendering has an index of 100. Conventional LEDs only have a CRI of between 60 and 80 and are ineffective in reproducing red tones.
LED+ contra-angle handpieces from W&H use a new technology: The result is a CRI of more than 90 which means clear colour contrasts and exceptional reproduction of natural red tones in the mouth.
Absolutely independentMicromotor on = LED+ on
The generator is integrated into the Alegra contra-angle handpieces and is completely independent. Therefore an external power supply is not required. The unique W&H LED+ generator technology ensures perfect LED+ quality, regardless of whether the dental unit, coupling or micromotor is equipped with its own light source.
Optimum preparation resultsAlegra step-up contra-angle handpiece WE-99 LED G
Efficient and precise preparation – regulated finishing
Optimum preparation results of your CAD/CAM restoration using the Alegra contra-angle handpiece WE-99 LED G.
![Alegra dental contra-angle handpiece WE-99 LED G]( "Alegra dental contra-angle handpiece WE-99 LED G")
WE-99 LED G
Dental contra-angle handpiece with
push-button chucking system,
for FG burs with Ø 1.6 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 20 mmWE-99 LED G
REF 10259900Contra-angle handpiece 1:4.5
LED+ light
Triple spray
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 22.3 mm
![Alegra dental contra-angle handpiece WE-56 LED G]( "Alegra dental contra-angle handpiece WE-56 LED G")
WE-56 LED G
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 20 mmWE-56 LED G
REF 10255600Contra-angle handpiece 1:1
LED+ light
Single spray
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.7 mm
![Alegra dental contra-angle handpiece WE-66 LED G]( "Alegra dental contra-angle handpiece WE-66 LED G")
WE-66 LED G
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 20 mmWE-66 LED G
REF 10256600Contra-angle handpiece 4:1
LED+ light
Single spray
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.7 mm
Alegra Straight and Contra-angle Handpieces without light
Outer diameter of the sheath: 18 mm
Light construction and slender design
The ultralight design of the Alegra straight and contra-angle handpieces reduces fatigue. With the micro air motor the Alegra straight or contra-angle handpiece is perfectly balanced.
W&H offers the optimal range of air motors for your Alegra straight and contra-angle handpieces.
Your advantages at a glance
- Robust and durable
- Ergonomic design
- Simple bur changing with the push-button chucking system
- Component replacement by the user
- Sterilizable
- External coolant supply (spray clip, coolant hose, nozzle cleaner) available as accessories
Simple bur changingPush-button chucking system
The easy operation of the push-button chucking system facilitates rapid bur change.
Simple and rapid with low actuating force. No tools required!
Robust and durableRobust and durable
High-quality materials make Alegra straight handpieces and Alegra contra-angle handpieces particularly durable and long lasting.
Perfect balancePerfect balance
The dental straight handpiece or dental contra-angle handpiece is comfortable in the hand and is perfectly balanced with the micro air motor.
![Alegra dental contra-angle handpiece WE-56 T]( "Alegra dental contra-angle handpiece WE-56 T")
WE-56 T
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 18 mmWE-56 T
REF 30120000Contra-angle handpiece 1:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.8 mm
![Alegra dental contra-angle handpiece WE-57 T]( "Alegra dental contra-angle handpiece WE-57 T")
WE-57 T
Dental contra-angle handpiece with
push-button chucking system,
for FG burs with Ø 1.6 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 18 mmWE-57 T
REF 30121000Contra-angle handpiece 1:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 22.7 mm
![Alegra dental contra-angle handpiece WE-66 T]( "Alegra dental contra-angle handpiece WE-66 T")
WE-66 T
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 18 mmWE-66 T
REF 30122000Contra-angle handpiece 4:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.8 mm
![Alegra dental straight handpiece HE-43 T]( "Alegra dental straight handpiece HE-43 T")
HE-43 T
Dental straight handpiece with
twist tension chucking system, for handpiece and contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: ISO 3964
Outer diameter of the sheath: 18 mmHE-43 T
REF 30123000Straight handpiece 1:1
Alegra Straight and Contra-angle Handpieces with StarDental® Connection
![Alegra dental contra-angle handpiece WE-56 T SD]( "Alegra dental contra-angle handpiece WE-56 T SD")
WE-56 T SD
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection: Star Dental
Outer diameter of the sheath: 18 mmWE-56 T SD
REF 30127001Contra-angle handpiece 4:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.8 mm
![Alegra dental straight handpiece WE-57 T SD]( "Alegra dental straight handpiece WE-57 T SD")
WE-57 T SD
Dental contra-angle handpiece with
push-button chucking system,
for FG burs with Ø 1.6 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: Star Dental
Outer diameter of the sheath: 18 mmWE-57 T SD
REF 30128001Contra-angle handpiece 1:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 22.7 mm
![Alegra dental straight handpiece HE-43 T SD]( "Alegra dental straight handpiece HE-43 T SD")
HE-43 T SD
Dental straight handpiece with
twist tension chucking system, for handpiece and contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: Star Dental
Outer diameter of the sheath: 18 mmHE-43 T SD
REF 30129001Contra-angle handpiece 4:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.8 mm![]()
Alegra Straight and Contra-angle Handpieces with Midwest® Connection
![Alegra dental contra-angle handpiece WE-56 T MW]( "Alegra dental contra-angle handpiece WE-56 T MW")
WE-56 T MW
Dental contra-angle handpiece with
push-button chucking system,
for contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection: Midwest
Outer diameter of the sheath: 18 mmWE-56 T MW
REF 30124001Contra-angle handpiece 4:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.8 mm
![Alegra dental straight handpiece WE-57 T MW]( "Alegra dental straight handpiece WE-57 T MW")
WE-57 T MW
Dental contra-angle handpiece with
push-button chucking system,
for FG burs with Ø 1.6 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: Midwest
Outer diameter of the sheath: 18 mmWE-57 T MW
REF 30125001Contra-angle handpiece 1:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 22.7 mm
![Alegra dental straight handpiece HE-43 T MW]( "Alegra dental straight handpiece HE-43 T MW")
HE-43 T MW
Dental straight handpiece with
twist tension chucking system, for handpiece and contra-angle burs with Ø 2.35 mm (ISO 1797-1)
Drive speed: 40,000 min-1
Motor connection according to standard: Midwest
Outer diameter of the sheath: 18 mmHE-43 T MW
REF 30126001Contra-angle handpiece 4:1
Head size: Ø 10.1 mm
Head height (with 19 mm bur): 20.8 mm![]()
An external coolant supply (spray clip, coolant hose, nozzle cleaner) for Alegra straight and contra-angle handpieces without light is available as accessories.
Download Area
FAQs
- Why does the WE-99 contra-angle handpiece have a transmission ratio of 1:4.5?
- Can the HE-43 E handpiece be employed in surgical applications?
- Can LED instruments with generator be sterilized?
- Can the new Alegra instruments be connected to motors with a light supply?
- What are the advantages of the new Alegra instruments?
- For what reason may the LED fail to light up?
- Is more heat generated by the light source when LED technology is employed?
- Can my W&H handpiece be processed via sterilizer.
- What is the difference between the Alegra contra-angle handpieces WE-56 T and WE-56?
Instructions for use
Find all languages of the Update Hygiene and Maintenance (EN ISO 17664:2017) in the Download Centre.
Video Tutorials
Downloads
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Alegra Straight and Contra-angle Handpieces without light Outer diameter of the sheath: 20 mm
WE-56 WE-57 WE-66 HE-43 Transmission ratio: 1:1 1:1 4:1 1:1 Motor connection according to standard: ISO 3964 Max. motor speed: 40,000 min -1 Head size: Ø 10.1 mm Ø 10.1 mm Ø 10.1 mm – Head height (with 19 mm bur): 20.8 mm 22.7 mm 20.8 mm – Rotary instruments according to ISO 1797-1: Contra-angle burs FG burs Contra-angle burs Handpiece and contra-angle burs Instrument shaft diameter: 2.35 mm 1.6 mm 2.35 mm 2.35 mm Maximum permitted bur length: 34* mm 25* mm 34* mm Handpiece burs: 50* mm
Contra-angle burs: 34* mmSpray: single, external Warranty: 12 months
* When using longer rotary instruments the user must ensure by correct selection of the operating conditions,
that there is no danger to the user, patient or third parties.
Alegra Contra-angle Handpieces with LED+ light
Outer diameter of the sheath: 20 mmWE-56 LED G WE-66 LED G WE-99 LED G Transmission ratio: 1:1 4:1 1:4.5 Colour coding: blue green red Colour rendering index (CRI): > 90 Colour temperature (Kelvin): 5,500 Luminous flux (Lumen): 5.0 Brightness (Lux): 25,000 Motor connection according to standard: ISO 3964 Max. motor speed: 40,000 min -1 Head size: Ø 10.1 mm Head height (with 19 mm bur): 20.7 mm 20.7 mm 22.3 mm Rotary instruments according to ISO 1797-1: Contra-angle burs Contra-angle burs FG burs Instrument shaft diameter: 2.35 mm 2.35 mm 1.6 mm Maximum permitted bur length: 34* mm 34* mm 25* mm Spray: single single triple Warranty: 12 months
* When using longer rotary instruments the user must ensure by correct selection of the operating conditions,
that there is no danger to the user, patient or third parties.
Alegra Straight and Contra-angle Handpieces without light
Outer diameter of the sheath: 18 mmWE-56 T WE-57 T WE-66 T HE-43 T Transmission ratio: 1:1 1:1 4:1 1:1 Motor connection according to standard: ISO 3964 Max. motor speed: 40,000 min -1 Head size: Ø 10.1 mm Ø 10.1 mm Ø 10.1 mm – Head height (with 19 mm bur): 20.8 mm 22.7 mm 20.8 mm – Rotary instruments according to ISO 1797-1: Contra-angle burs FG burs Contra-angle burs Handpiece and contra-angle burs Instrument shaft diameter: 2.35 mm 1.6 mm 2.35 mm 2.35 mm Maximum permitted bur length: 34* mm 25* mm 34* mm Handpiece burs: 50* mm
Contra-angle burs: 34* mmSpray: single, external Warranty: 12 months
* When using longer rotary instruments the user must ensure by correct selection of the operating conditions,
that there is no danger to the user, patient or third parties.
Alegra Straight and Contra-angle Handpieces with StarDental® Connection Outer diameter of the sheath: 18 mm
WE-56 T SD WE-57 T SD HE-43 T SD Transmission ratio: 1:1 1:1 1:1 Motor connection according to standard: StarDental®** Max. motor speed: 40,000 min -1 Head size: Ø 10.1 mm Ø 10.1 mm – Head height (with 19 mm bur): 20.8 mm 22.7 mm – Rotary instruments according to ISO 1797-1: Contra-angle burs FG burs Handpiece and contra-angle burs Instrument shaft diameter: 2.35 mm 1.6 mm 2.35 mm Maximum permitted bur length: 34* mm 25* mm Handpiece burs: 50* mm
Contra-angle burs: 34* mmSpray: single, external Warranty: 12 months
* When using longer rotary instruments the user must ensure by correct selection of the operating conditions, that there is no danger to the user, patient or third parties.
** StarDental® is a registered trademark of DENTALEZ Inc.
*** Midwest® is a registered trademark of Dentsply International Inc.
Alegra Straight and Contra-angle Handpieces with Midwest® Connection Outer diameter of the sheath: 18 mm
WE-56 T MW WE-57 T MW HE-43 T MW Transmission ratio: 1:1 1:1 1:1 Motor connection according to standard: Midwest®** Max. motor speed: 40,000 min -1 Head size: Ø 10.1 mm Ø 10.1 mm – Head height (with 19 mm bur): 20.8 mm 22.7 mm – Rotary instruments according to ISO 1797-1: Contra-angle burs FG burs Handpiece and contra-angle burs Instrument shaft diameter: 2.35 mm 1.6 mm 2.35 mm Maximum permitted bur length: 34* mm 25* mm Handpiece burs: 50* mm
Contra-angle burs: 34* mmSpray: single, external Warranty: 12 months
* When using longer rotary instruments the user must ensure by correct selection of the operating conditions, that there is no danger to the user, patient or third parties.
** StarDental® is a registered trademark of DENTALEZ Inc.
*** Midwest® is a registered trademark of Dentsply International Inc.
