5Pcs 1/4 HSS Countersink Drill Bit Set Shank Woodworking Carpentry Tool

Similar Items Description Package Included:
1 x Hexagon Screw Drill Bit Set


Specification:
6 # 2.38mm
8 # 2.78mm
10 # 3.175mm
12 # 3.56mm
Handle: 1/4 hexagon handle.
Chamfering Device: Corresponding drill size
Material: High-speed steel 4241 (suitable for workpieces with a hardness below 25HRC, such as carbon steel, thin iron plates, insulation plates, PVC plates, wood boards, etc.). Black chamfer made of 45 steel


Feature:
- shank diameter is 6.35mm.
- Function: You can drill the screw hole and the counterbore receiving the screw cap at the same time and keep both on the same axis. After screwing the screw, the screw cap is located below the plane of the board!
- Suitable for drilling machines with chucks or joints, suitable for drilling in hard wood and wood layers.
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