4 piece set includes bits for drilling pilot holes for screw sizes # 3, # 4, # 5 and # 6.
Special designed steel counter sleeve countersinks or counter bores pilot hole.
Adjustable counter sleeve depth with a wrench.
Drill and countersink for wood screws without changing bits.
Drilling length can be adjusted for various length screws simply by loosening and tightening
Countersink or counter bore clean, smooth holes for screws and fasteners
For use in wood and plastic
Includes countersink sizes: # 3, # 4, # 5 and # 6
Countersink diameter: 15.8mm
Material: HSS 4241 titanize
Black chamfer drill body material is # 45 steel.
Colour: As the pictures show
size: Chamfer Drill
4pcs Woodworking drill countersink