KP-55 Handpiece only Manufactured from durable stainless steel, the KP-55 features a smaller nose and rubber grip, and is our smallest (5.35”), with a slim body diameter (0.78”) and lightest (5.6 oz.) Handpiece. The KP-55 features a dynamically tuned coreless motor with 2 high speed precision ground bearings that allow it to operate at very high speed, 30,000 RPM with virtually no vibration! It has a molded strain relief cord and is compatible with MANIPro Passport Control Box, KP-5000, UP-200, UP200-V and Upower® 2-G Control Boxes. Full 1 year parts and labor warranty with your KUPA Handpiece.