23PCS Hole Drilling Bit Set Stainless Steel Brass 1/4in Hex 3/8in Round Countersink Drill Bit Set for Woodworking Item Type: Hole Drilling Bit Set Material: Stainless steel, brass Wood Plug Cutter Specification: Approx. 12mm / 0.47in, 14mm / 0.55in, 19mm / 0.75in, 22mm / 0.87in, 10mm / 0.39in, 14mm / 0.55in, 17mm / 0.67in, 20mm / 0.79in Wood Plug Cutter Shank Size: Approx. 10mm / 0.39in, 9.5mm / 0.37in 1/4in Hex Countersink Drill Bit Specification: Approx. 6mm / 0.24in, 8mm / 0.31in, 9mm / 0.35in, 12mm / 0.47in, 16mm / 0.63in, 19mm / 0.75in 1/4in Hex Countersink Drill Bit Shank Size: Approx. 7mm / 0.3in 3/8in Round Shank Countersink Drill Bit Shank Size: Approx. 3mm / 0.12in, 4mm / 0.16in, 5mm / 0.2in, 6mm / 0.24in, 7mm / 0.28in, 8mm / 0.31in, 9mm / 0.35in Automatic Center Punch Size: Approx. 128 x 8mm / 5 x 0.31in