Description
- 7 piece set includes bits for drilling pilot holes for screw sizes 3mm, 4mm, 5mm, 6mm,7mm,8mm,10mm.
- Made of HSS 4241, built to last. Chamfer is 5 flutes that can discharge the wood more rapid in the process of using, sink hole disposable drilled smooth, screw cap perfect embedded in the surface of work piece.
- Special designed steel counter sleeve countersinks or counter bores pilot hole.
- Drilling length can be adjusted for various length screws (comes with a handy wrench for your convenience)
- Suitable for aluminum, wood（hardness less than 25 degrees） and plastic, ideal for production, maintenance or portable drilling jobs.
7pcs HSS Countersink Drill Bits Set Woodworking Reamer Chamfer Tool, 3-10mm Pre-Drill Counterbore Drill Bits Made for Screw
