The high standards required for the achievement of optimum surgical results are met by the W&H range of surgical contra-angle handpieces, whose design is the result of close attention to detail, high operational safety and stainless steel construction. Features: - Durable and robust due to high-quality stainless steel and scratch-resistant coating (except WI-75 E/KM). - Fatigue-free working thanks to optimal ergonomics. - Can be dismantled for thorough cleaning (except WI-75 E/KM). - Thermo washer disinfect-able and sterilizable. Specifications: - Transmission ratio: 20:1. - Coupling system: ISO 3964 (DIN 13940). - External spray: Single. - Internal bur cooling system: Kirschner/Meyer. - Chucking system: push-button chuck. - Rotary instruments: for surgical burs and cutters with contra-angled shank Ø 2.35 mm. - Maximum drive speed: 50,000 min -1. - Can be dismantled: No.