7pc Wood Countersunk Head Drill Bit Set Auger Countersink Screw Kit + 1 Hex Key

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.