FX Series Handpiece FX57M Prophy Screw In An integrated body Offering Peak Performance and Durability The slim, stylish body gives you a larger operating field and offers a more secure grip. Stainless steel material ensures high durability and lighter weight, resulting in excellent all-around usability. FX series handpieces are also easy to clean due to their integrated construction. Features: • Easy Cartridge Replacement • High-Precision Gears • Push Button Chuck • Hygienic • Paste Defense system • Highly Durable against Autoclave and Thermo Disinfection For screw-in cups and brushes, 360° Rotation, Paste Defense System, w/o Spray, Max Speed: 5,000 min-1.