The Bosch Turbo Diamond cup wheel provides controlled material removal and a smooth final grind for concrete. Holes in the steel body were added to aid dust control. The wheel itself is precision Balanced for less vibration and a better grind. The wheel is more durable than bonded abrasive wheels for concrete and masonry applications. It features a 7/8 in. Arbor for use with a Bosch concrete surface Grinder.