FEATURES-Quick & simple conversion from hand to power trimming-Use a standard electric hand drill or power screwdriver-Can power trim over 250 cases an hour-Adapter shaft comes with its own cutter & stop collars - Can convert from power to hand operationwithoutchanging settings-Lyman Universal Chuckhead system allows you to switch to any caliber from .17 up to .458-Includes 9 of the most popular pilots-No collets required