- 1. Five piece set includes bits for drilling pilot holes for screw sizes #6,#8,#10 and #12.
- 2.Special designed steel counter sleeve countersinks or counter bores pilot hole.
- 3.Adjustable counter sleeve depth with a wrench.
- 4.Drill and countersink can be used for wood and plastic without changing bits
- 5.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
