Specially designed to through hole cleanly in end grain and thin stock, great for boring concealed hinges and door clocks.
Precision ground for heavy use and easily resharpened, they can enlarge existing holes with ease and can bore any arc of a circle.
It's head adopt arc curve design, beneficial to chip removal, perforation is more efficient.
Suitable for drill press, pistol drill, bench drill, vertical drilling machine, hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine etc.
Perfect used for mounting spherical door shoot tip, drawer ; perforation on wood products , plastic products, wood and plywood etc.
