Countersink Drill Bit 5PCS 1/4" Hex Shank Countersink Set Quick Change Wood Drill Bit Set for Woodworking with 1PC Small Hex Wrench

• Five piece set includes bits for drilling pilot holes for screw sizes #5, #6, #8, #10, and #12
• Make drilling, countersinking and counter bore a one-step process
• Drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew
• 1/4" hex shank can be used with power drills and quick change chucks
• Suitable for bore metal, PVC, wood, plank, aluminium alloy or plastic board

Features: 6 piece set includes 5 bits for drilling pilot holes for screw sizes #5 #6,#8,#10 and #12 and 1 hex wrench. Special designed HSS steel counter sleeve countersinks & counter bores pilot hole. Adjustable counter sleeve depth with allen wrench and 1/4" hex shank is quick change compatible. Pre-drilling and countersink to drive screws flush with the material surface or deep hole counter boring for driving screw heads below the surface. Drill and countersink for wood screws without changing bits, very convenient. Adjustable drilling length for various length screws simply by loosening and tightening the screw. Specifications: Color: Silver + Black Material: Carbon Steel + High Speed Steel (HHS4241) Hardness: HRC 60 Countersink Sizes: #5, #6, #8, #10, #12 Shank: 1/4"(6.35mm) Hex Shank Quantity: 5 pcs Drill Bits + 1 pc Small Wrench Chamfer Diameter: 10mm / 0.39" Countersink Diameter: 5# 1.98mm / 0.078" 6# 2.38mm / 0.09" 8# 2.78mm / 0.11" 10# 3.175mm / 0.125" 12# 3.56mm / 0.14" Countersink Length: 5# 54mm / 2.13" 6# 56mm / 2.20" 8# 61mm / 2.40" 10# 64mm / 2.52" 12# 69mm / 2.72" Package Content: 5 x Countersink Drill Bits 1 x Hex Wrench