Sigma M14 Diamond Drill Bit

Sigma M14 Diamond Drill Bit: Fast, Professional Drilling for Hard Materials. Equipped with a versatile M14 thread and a 9mm hex adapter, it fits seamlessly onto most standard angle grinders and drills. Operating at an optimal speed of 1,000 RPM (up to a maximum of 1,500 RPM), it provides clean, chip-free holes with an impressive lifespan of approximately 60 holes in porcelain tiles.