Long Lifetime in Stone and Concrete - The Conical Cup Wheels deliver a long lifetime when grinding stone and concrete. Its high-quality silicon carbide abrasive grain is designed for endurance with application. It is intended for grinding stone and concrete. It is suitable for use with two-handed angle grinders with a maximum speed of up to 8500rpm. For best results and safety, the Conical Cup Wheels are intended for use with two-handed angle grinders with a maximum speed of 8500 rpm only. With 22.23 mm bore for standard locking nut angle grinders. Features and Benefits • Long Lifetime on Stone and Concrete • Conical Cup Wheels for a long lifetime grinding stone and concrete • High-quality silicon carbide abrasive grain designed for endurance with application Specifications Specification: C 30 L5 BRT Min. diameter: 90mm Max. diameter: 110mm Height: 55,0mm Grit(s): 30