• Long life with unique sealing system • Best view with small head • Efficient treatment with ergonomic design • Optimal speeds for atraumatic and efficient polishing/cleaning • Easy to clean and hygiene-friendly • Thermo washer disinfectable and sterilizable For disposable contra-angles with plastic shank, System Doriot, PL-40 HW The W&H Proxeo handpieces and contra-angle handpieces support efficient treatment through their ergonomic design, with a small head and optimum speed directly on the tooth. TECHNICAL DATA Max. motor speed: 10,000 min -1 Transmission ratio: 4:1 Recommended speed for cups and brushes: 1,250 – 1,500 min -1 Maximum speed for cups and brushes: 2,500 min -1 Attachments that can be used: disposable contra-angles with plastic shaft, system Doriot Coupling system : ISO 3964 Non-Latex