FX Series offers ergonomic handpieces that are functional and reliable. Simple technology with a durable, modern design. High-precision gear system operates quietly with low vibration. Push-button chuck allows simple, one-touch bur insertion and removal without the need for a chuck tool. Specifications Gear Ratio: 4:1 Reduction For: Prophy angle Body Material: Aluminum Max Speed: 2,500 min-1 Features Prophy angle connectable Compatible with KaVo INTRA™ 181K Air Motor