?? Surface is coated with titanium for anti-oxidation and makes these cutters more durable. 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
?? Material: HSS 4241( Ti Titanium-coated);Size: Chamfer Drill 5# 2.00mm 6# 2.38mm 8# 2.75mm 10# 3.16mm 12# 3.55mm
??Package Included: 5 Pcs Woodworking drill countersink. 1 pc wrench