Standard Pack = 1 piece(s). Cutting Diameter= 1-1/4 IN; Insert Torx Screw=SR 10508082-HG; Length(Neck& Head)=1.48 IN; Number of Inserts=5; Overall Length=4 IN; Shank Diameter=1 IN; Uses Insert Style=H490 ANKX 090408PNTR; Model Number=H490E90AXD1.255W1.009; Lead Angle=90degree ; Number of Flutes=5; Wrench=Blade T08/M7;