Timberline TRS-270 Cove Raised Panel 1/2-Inch Shank Door Making Router Bit Set with Back Cutter, 3-Piece For 5/8-Inch to 3/4-Inch material Carbide Tipped, Professional Quality 1/2-Inch Shank Includes Timberline and reg; No.440-19: 1-3/4-Inch Diameter 2-piece Ogee Stile and Rail bit and No.420-52: 3-1/2-Inch Diameter Cove Raised Panel bit with Back Cutter. Custom-made hardwood storage case included.