1/8 TO 3/32: Adapter has 1/8" shank accepting tools with 3/32" shanks

Control unit with built-in rechargeable Lithium battery features a digital RPM display at the top that makes it easy to monitor speed as you work.  The dial on the front adjusts speed from 0 – 30,000 RPM.  * Run time is approximately 5 hours, depending on how long the micromotor is in continuous use when in battery mode, or plug it in for day-long use. Our K1030 comes with:  •HP4-310 Control Box  • H.MH-13018 with 1/8" collet installed.  •HP8-306 Charger/Adapter  •HP4-933 Handpiece Cradle  •HP8-163 Spare pair of motor brushes Micromotor with pocket size control has Li-ion rechargeable battery for the ultimate in portability.  Variable speed up to 30,000 RPM. Handpiece comes with 1/8" collet.