Countersink Drill Bit Set Carpentry Reamer Chamfer Boring Drilling Round Shank Counterbore Screw Hole Drill Woodworking Tool

Drilling chamfering, once resolved. High-speed steel material, good toughness, high strength. Adjustable counter sleeve depth with wrench Drill and countersink for wood screws without changing bits. Chamfering five edge in the use of the process can be fast discharge sawdust, disposable smooth drilled countersink the screw cap perfectly embedded in the surface. [Material]: Three sharp woodworking drill high-speed steel 4241, in the middle chamfering drill body is 45 steel