uxcell Woodworking Tool 1/4" x 3/4" Straight Shank Core Box Router Bit Product Name : Core Box Router Bit;Material : Steel, Carbide;Standard : 1/4" x 3/4" Shank Diameter : 6.35mm / 1/4";Cutting Diameter : 19.04mm / 3/4";Cutting Radius : 9.52mm / 3/8" Cutting Depth : 12.7mm / 1/2";Overall Diameter : 19mm/3/4" Overall Length : 45mm / 1.8";Color : Silver Tone Weight : 20g;Package Content : 1 x Core Box Router Bit