W&H WI-75 E/KM Implant Contra-Angle Handpiece (20:1)

The WI-75 E/KM is W&H’s entry-level 20:1 implant contra-angle handpiece, designed to deliver reliable performance for routine implant placement and osteotomy at an accessible price point. Built around a durable stainless-steel body and precise gearing, the WI-75 E/KM supports predictable torque transmission and stable handling during implantology procedures.

Manufactured by W&H, this contra-angle features a push-button chuck with a hexagon chucking system and the Kirschner/Meyer internal bur cooling system to support efficient irrigation during implant site preparation.

Clinical indications

• Implant placement

• Osteotomy

Key features

• 20:1 reduction ratio for implantology applications

• Contra-angle design for controlled access and visibility

• Push-button chuck with hexagon chucking system

• Accepts contra-angled surgical burs and cutters Ø 2.35 mm

• Internal Kirschner/Meyer bur cooling system

• Single spray cooling

• Stainless steel construction for durability and operational safety

• Ergonomic design supporting fatigue-free working

• Thermo washer-disinfectable and sterilizable

Important maintenance and usage note

The WI-75 E/KM cannot be dismantled for in-office servicing. For this reason, strict adherence to W&H-recommended cleaning, lubrication, and sterilization protocols is essential.

Improper maintenance can increase the risk of internal wear or seizure, potentially interrupting a procedure. In busy implant practices, it is strongly recommended to maintain multiple implant contra-angle handpieces to ensure procedures can be completed without disruption in the event of a handpiece failure.

Technical details

• Gear ratio: 20:1

• Design: implantology contra-angle

• Bur system: contra-angled shank Ø 2.35 mm

  • Shank hardness > 50 HRC / > 520 HV

• Chucking system: hexagon chuck

• Cooling: internal (Kirschner/Meyer), single spray

• Maximum drive speed: 50,000 rpm

• Coupling system: ISO 3964 (DIN 13940)

• Dismantlable: no

• Sterilization: thermo washer-disinfectable and sterilizable

The WI-75 E/KM serves as an economical entry point into W&H’s 20:1 implant contra-angle lineup. For clinics seeking higher serviceability or additional features, W&H offers advanced implant contra-angles with dismantlable designs and expanded maintenance options.