Womdee Countersink Drill Bit with Center Punch 8 Pack for Woodworking, Wood Screw Countersink/Pilot Hole Drill Bit Set, Woodworking Chamfering Counter Bits Carpentry Reamer Plated Diameter 3-10mm

[High speed steel] -- The countersink drill bits set is made of high speed steel,quenching treatment shell designed, high hardness, good abrasion resistance, durable.
[Removable & Adjustable] -- Drilling length of the countersink drill bits set can be adjusted for various length screws simply by loosening and tightening the screw.
[Size] -- The countersink drill bits set have Dia 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm 7 x chamfer drill and 1x Wrench. Chamfer dia: 15.8mm.
[Design] -- Woodworking Drill Bits Set has large chip flute and five-edge chamfer machine, the operation of faster discharge of sawdust, you will get a nice smooth surface on any type of hard, soft wood or aluminum.
[Function] -- Perfect for drilling machines with chuck, for drilling on hard wood or wooden floor. The countersink drill bits set are applicable to bench drill, hand drill etc. Use on wood.