Counterbores | Guhring

Counterbores are used to enlarge the opening of a hole to produce a flat bottom so  socket-head screws will fit flush with the surface.

Guhring Australia Established in 1989, has grown to one of Australia's leading suppliers of precision cutting tools. supplying high-performance precision cutting tools, gun drills, end mills, carbide inserts, carbide tools, countersinks, milling cutters, threading tools and twist drills.