RIDGID Turbo-Mesh Rim Diamond Blades are made with the professional users in mind. These blades are engineered to provide an extremely smooth cutting finish on porcelain, marble and granite. The Mesh Rim design allows for less friction and more efficient heat dispersion for superior cutting performance. It has a reinforced hub steel core construction that ensures a wobble-free cutting experience. Use on 5in angle grinders with 7/8 in. arbor, includes 5/8 in. and 20 mm adapters.