23Pcs Claw Type Chamfer Drill Bit Hex Set for Woodworking Cutter Chamfering Tool Item Type: 23Pcs Claw-type chamfer drill bitMaterial: High speed steel + high carbon steel Specification: Cork Drill: 10/12 10/14 10/19 10/22 9.5/10 9.5/14 9.5/17 9.5/20 (mm) Twist Drill: 10/10 8/8 7/7 6/6 5/5 4/4 3/3 (mm) Gold-Plated Diamond: 6/19 6/16 6/12 6/9 6/8 6/6 (mm) Cork Drill Top Size 10mm / 0.39in 10mm / 0.39in 10mm / 0.39in 10mm / 0.39in 9.5 / 0.37in 9.5 / 0.37in 9.5 / 0.37in 9.5 / 0.37in Bottom Size 12mm / 0.47in 14mm / 0.55in 19mm / 0.75in 22mm / o.87in 10mm / 0.39in 14mm / 0.55in 17mm / 0.67in 20mm / 0.79in Twist Dril Top Size 10mm / 0.39in 8mm / 0.31in 7mm / 0.28in 6mm / 0.24in 5mm / 0.2in 4mm / 0.14in 3mm / 0.12in Bottom Size 10mm / 0.39in 8mm / 0.31in 7mm / 0.28in 6mm / 0.24in 5mm / 0.2in 4mm / 0.14in 3mm / 0.12in Gold-Plated Diamond Top Size 6mm / 0.24in 6mm / 0.24in 6mm / 0.24in 6mm / 0.24in 6mm / 0.24in 6mm / 0.24in Bottom Size 19mm / 0.75in 16mm / 0.63in 12mm / 0.47in 9mm / 0.35in 8mm / 0.31in 6mm / 0.24in