Tiger Aluminum 7 inch type 27 grinding wheels are specifically designed for high performance grinding and extended wheel life on aluminum. These wheels blend abrasive grains with Weilerís non-loading formula, resulting in a fast and consistent cut rate on aluminum. The flat profile with depressed center allows for a wide range of grinding angles (0-45∞) with a right angle grinder. Ideal for heavy stock removal, scale removal, weld removal, weld blending, edge beveling and torch-cut softening. The 5/8" - 11 nutted metal hub allows for quick spin-on, spin-off changeover and eliminates cross-threading or sticking to spindle due to heat build-up.