Standard Pack = 1 piece(s). Head Length=1.25 IN; Head Width=1.25 IN; Insert Screw=GTS2; Overall Length=6 IN; Shank Size=1-1/4 x 1-1/4 x 6; Maximum Bore=0.23 IN; Gage Line=1.5 IN; Shank Diameter=1.25 IN; Model Number=STVOR 20-4D;