Designed for builders and tilers to do light tidy up work. Designed for use with angle grinders for cured concrete and hard stone grinding. Available in 105, 115 and 125mm diameters and features triple turbo tooth segments of premium fast bond - 30/40 grit high quality diamond for reliability and speed. Manufactured from a single heavy duty, fully ground steel core (whole in one sintering) for strength and eliminates torque. Open air ducting enables cooler operation than other cup wheels, providing fast stock removal and longer grinding life. Diamond Grit 30/40