Body made of carbon steel, Excellent removal speed, Turbo diamond cup, For marble, concrete, non-abrasive block and stone, Dry or wet grinding, For fast material removal and a smooth finish, For angle grinder. Diameter: 4" (100mm), Inlet For Arrow (inner diameter) 7/8" (22mm), Abrasive Section: 7mm, Weight: 412g, No. Of Segments: 24, Maximum Speed: 14,500rpm