Standard Pack = 1 piece(s). Right/Left Hand=Right; Type=On-Edge Threading Toolholder; Head Length=1 IN; Head Width=5/8 IN; Insert Screw=GTS1; Overall Length=4 IN; Shank Size=1/2 x 1/2 x 4; Maximum Bore=0.15 IN; Gage Line=0.625 IN; Shank Diameter=0.5 IN; Model Number=STVOR 08-3A;