The K&M case prep machine is an industrial grade unit that features an industrial DC brushless motor for constant torque control over a speed range from 50 to 200 rpm. The speed can be quickly changed by simply rotating the dial switch and pressing to enter the speed. Models are available from single to six spindle configurations. The driven spindles feature a unique collet design that accepts ¼” hex shank tools that are oriented horizontally for natural ergonomics. Drive all of the K&M line of tools or select a ¼” hex tool shank adapter with either 8-32 or 3/8-24 threads to drive any tool of your choice. Arrange tools to meet our preference of case prep procedure. It has a spring loaded spindle lock pin to hold the spindle position while setting tools or loading/unloading cartridges into the power adapter.