For Stile and Rail Set Ogee for cabinet doors. Large 1-1/4" hole bore. For 3/4" wide doors. Specifications A = 3-1/2 Inch Cutter Diameter B = 7/8 Inch Cutting Length r = 3/16 Inch Radius w = 3/8 Inch Cutting Width 1-1/4 Inch Bore Diameter