SELF DRILLING, SPLIT TIP TYPE; STEEL MATERIAL; 1/8 INCH STEP HEIGHT; 7/16 INCH MIN. DRILL SIZE; 1-1/8 INCH MAX. DRILL SIZE; STRAIGHT WITH 3-FLAT SHANK TYPE; 3/8 INCH SHANK SIZE; 12 SIZE(S); 1/16 INCH STEP INCREMENT; NUMBER OF FLUTES 2