TOOL-FREE BIT CHANGE - No Allen Key Required To Change LENOX Pilot Bit (Only applies to LENOX Pilot Drills)|SNAP-BACK 2-STEP RELEASE - Step 1. Unlock Hole Saw, Step 2. Unlock Pilot Bit|ANTI-JAM COLLAR - Reinforced Collar Drives Hole Saw Without Jamming Or Disengaging|UNIVERSAL HOLE SAW COMPATIBILITY - Accepts All Threaded Hole Saws, No Adapters Required - For the Range of Diameters Listed On Packaging|SINGLE-HANDED OPERATION - Collar Snaps Back and Stays In Position While Changing Bits