The Blue Spot Tools 3 PCE 115mm (4.5") Diamond Cutting Disc Set features a range of discs for general use. 3 discs as follows: Segmented for general building use, turbo for general building use including both dry and wet cutting and a continuous rim disc for both wet and dry cutting of materials such as granite, ceramics and porcelain. Designed to provide fast and accurate cuts. Ideal for use with many materials including roof tiles, high-density concrete, kerbstones, slabs, pipes and bricks. High resistance to breakage and long-lasting durability. Suitable for all makes of angle grinders. Specially designed to provide fast and accurate dry cutting with a high resistance to breakage and long lasting durability Ideal for many materials including roof tiles, high density concrete, kerb stones, slabs, pipes and bricks Suitable for all makes of angle grinders Diameter: 115mm (4.5") / Bore 22.2mm / Segment depth: 2-3cm Maximum safe speed: 13300rpm (80m/s) MPA Tested/EN13236