Woodworking Countersink Drill Bit Set

Four piece set includes bits for drilling pilot holes for screw sizes #5, #6,#8,#10 and #12
Special designed steel counter sleeve countersinks or counter bores pilot hole
Adjustable counter sleeve depth with Allen wrench
Standard hex shank is quick change compatible
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