Uxcell Concrete Masonry Drill Bit High Speed Steel 1/4 Shank 4mm Dia. for Glass

Concrete Masonry Drill Bit High Speed Steel 1/4 Shank 4mm Dia. for Glass The cutter head is made of carbide. The triangular bit has low resistance and can improve work efficiency. The tool shaft is made of high-speed steel which is strong in hardness and wear resistance. It can be installed on electric drills and bench drills. Widely used for drilling walls bricks wood glass ceramic tiles concrete etc. Use a constant flow of coolant often remove chips to extend the service life. Do not knock the drill bit to avoid deformation of the drill bit break.