The 2-speed gearbox allows a wide rangeof cutters to be used and deliversmaximum torque. The Quick-Release arbor makes it quickand tool free to change cutters andaccessories. Slide Height LockThe Quick-adjustable variableheight slide allows a variety oftools to be used. Lower forcutters, raise for twist drills. TWIST DRILLINGA revolution in time savings, thenew special weldon shank drillchuck mounts directly into thequick release arbor. This means itnow takes just seconds to convertfrom cutter to twist drills!