Uxcell a15012000ux0535 Woodworker 1/2 Inch x 1 1/2 Inch 2 Flutes Cove Box Router Bit Cutter Product Name : Cove Box Bit; Standard : 1/2" x 1 1/2";Radius : 19mm / 3/4" Cutting Diameter(Approx.) : 38mm / 1 1/2";Shank Diameter : 12.5mm / 1/2" Cutting Thickness : 23mm / 15/16";Total Length : 67mm / 2.6"