FX Series offers ergonomic handpieces that are functional and reliable. Simple technology with a durable, modern design. High-precision gear system operates quietly and virtually without vibration. Aluminum body, 4:1 Reduction, For HP burs (ø2.35), Clean Head System, Max Speed: 10,000 RPM, Prophy Angle Connectable • Compatible with KaVo INTRA™ 181K Air Motor