Long Life for Ceramics - The Diamond Cutter Dry Speed delivers long life when dry drilling hard ceramics. Its high-class diamonds provide very high drilling speeds, and its vacuum-brazing technology ensures a long lifetime. This product is intended for tiles ranging from soft wall tiles to very hard floor tiles, such as stoneware. It is suitable for use with angle grinders. With 22.23 mm bore for standard locking nut angle grinders. Features and Benefits • Long Life for Hard Ceramics • Diamond Cutter Dry Speed delivers long life when dry drilling hard ceramics • High-class diamonds provide very high drilling speeds Specifications Diameter (D): 22mm Diameter (D) 2: 7/8" Working Length: 35mm Working length (L1): 35mm