CMT 822.332.11 3-Wing Slot Cutter  with  1/8-Inch Cutting Length and 5/16-Inch Bore 1-7/8-Inch Diameter, 0.050 Body Thickness. 3 Hi-Density Carbide cutting edges. Anti-kickback design and PTFE coating to protect your tool from pitch and resin buildup. Heavy-duty steel body.