Titanium Coating Countersink Drill Bit Set

Titanium Coating Countersink Drill Bit Set with Hex Key Screw Hole Fluted bits have one or more cutting edges, cross-hole countersinks have an angled hole in the tip which acts as the cutting edge. A pilot hole is first drilled for the screw, followed by countersinking the hole to allow a flat-head screw to seat flush with the work surface. Package & Shipping: Free shipping all over the world 4pcs/7pcs Countersink Drill Bit Set To Korea, Japan : it take about 7-10 days To USA, CA, Spain, France, Poland, Belgium, Portugal, United Kingdom, Germany, Italy and Netherlands: it take about 12 - 20days To other European countries and Ukraine,Belarus,Russian Federation: it take about 15-30 days To other countries: it take about 20-35 days Features: Special designed steel counter sleeve countersinks or counterbores pilot hole. Drilling length can be adjusted for various length screws simply by loosening and tightening the setscrew. Chamfer is 5 flutes, In the process of using, can dischar