4pcs HSS Countersink Drill Bit Set Counter Bore Screw Woodworking Tool
This 4pcs woodworking countersik drill bit set has excellent workmanship and durability with titanium-coated HSS.The drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew with the adjustable counter sleeve depth design ideal for less than 25HRC hardness workpieces countersinking, such as carbon steel, sheet iron, insulation board, PVC board, wood, etc.
Material: HSS Drill 4241(Titanium-coated)
Black chamfer drill body material: steel 45
Countersink sizes: #6, #8, #10, #12
6# 2.38mm (0.0937 inch) x 55mm(L)
8# 2.78mm (0.1094 inch) x 60mm(L)
10# 3.175mm (0.125 inch) x 63mm(L)
12# 3.56mm (0.14 inch) x 65mm(L)
Shank : 1/4 hex shank.
HSS materail with Titanium-coated,durable
Four piece set includes bits for drilling pilot holes for countersink sizes #6,#8,#10 and #12.
Special designed steel counter sleeve countersinks or counter bores pilot hole.
Adjustable counter sleeve depth with a wrench.
Drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew.
Suitable for less than 25HRC hardness workpieces, such as carbon steel, sheet iron, insulation board, PVC board, wood, etc.
4X Countersink Drill Bits
1X Hex Wrench
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