SOLID TYPE; HEAT TREATED MATERIAL; 1-1/2 INCH MAX. BORE DIAMETER; 1.5 MAX. BORE DIAMETER - DECIMAL; 1-1/2 MAX. BORE DIAMETER - FRACTIONAL; HEX SHANK TYPE; ITEMS/FEATURES MIRCO GROOVE EDGE FOR CLEAN FAST BORING, QUICK CHANGE; USED ON ELECTRIC DRILL