UCT Gem Carbide Rotary Burr SL 4 1 2 Inch (1 4 Inch Shank Tungsten Carbide Tapered Radius End Double Cut 20000 Max RPM Weld Grinding) Rotary Hammers Standard 3 4 Inch Weldon Shank: Precision machined Standard 3 4 Inch Weldon Shank: Precision machined shank with dual flat locking sectors fits securely into magnetic drill press arbors to prevent rotational slippage under heavy torque The GearWrench 80550P 56 piece 3 8 inch drive socket set delivers maximum turning capability in cramped engine compartments using a patented 120XP teardrop ratchet with dual stacked pawls providing 120 positions and an ultra narrow 3 degree swing arc this tungsten carbide head bit features a tapered ball nose head profile and double cut cross flute geometry that breaks material into fine chips to eliminate chatter Technical Specifications