Countersink Drill Bits Set, 7 Pcs Counter Sink Bit for Wood High-Speed Steel, Woodworking Carpentry Reamer with 1 Free Hex Key Wrench

Countersink Drill Bits Set Specifications: Material: High-speed steel Angle 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. Perfect for Professional Use and DIY Homeowner.