3pc Metric Counter Sink Drill Bit Set. Countersink Drill Bit Set. DRILL BITS. Untitled Document. HAND TOOLS. Standard Quick Release 1/4" Hex Shank Fits all Drills. More Drill Bits. Manufactured from Hi Grade Carbon Steel.
Features: Five piece set includes bits for drilling pilot holes for screw sizes #6,#8,#10 and #12. 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.