Features:
Five piece set includes bits for drilling pilot holes for screw sizes #6, #8, #10 and #12. #14
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
the setscrew.
Countersink or counter bore clean, smooth holes for screws and fasteners
For use in wood and plastic
Includes countersink sizes: #6, #8, #10 #12 #14
Shank: 1/4 Round shank.
Material: HSS 4241( Ti Titanium-coated)
Black chamfer drill body material is #45 steel.
size: Chamfer Drill
6# 2.38mm
8# 2.78mm
10# 3.175mm
12# 3.56mm
14# 3.97mm