Material: High-speed steel
Angel Design: Tricuspid centering- accurate centering for sharp and precise countersinking.
Flute Type: Five-edged chamfer- fast discharge chips from the hole on both sides automatically.
Hex Wrench: Gift- easy to use the combination of Hex Key to adjust or disassemble the countersink drill bit and the five-flutes chamfering.
Set Includes: 3mm, 4mm, 5mm 6mm, 7mm, 8mm, 10mm and 1 free Hex Key Wrench.
Easy to use:
Step1: Rotate the Hex Wrench to adjust the length you need.
Step2: Insert the countersink bit into the drill. Please make sure the drill bit is clamped.
Step3: Vertical drilling the drill bit during the operation. The depth only needs to allow the screw head to sink below the surface.
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