VANEPIC V30 30mm Full bullnose diamond hand profiler is suitable for 30mm thick granite marble stone countertop edge shaping,The diamond profile wheel hand profiler router bits can create professional contour on stone marble slab granite tile countertop profile edges，which is easy to operate， can also be used for concrete, but life will be short due to the abrasive nature of concrete.Bullnose diamond grinding wheel adopts vacuum brazed diamond technology, high hardness, fast cutting, the center has internal water inlet holes, can be used wet or dry, it is recommended to use the central water jet polishing machine with a speed of 3500 RPM, the recommended speed is 3500-4000 RPM. full bullnose diamond wheel with 5/8 "-11 threads for any polisher/grinder with a 5/8" -11 threaded spindle. The high carbon steel guide on the top of the diamond profile wheel can control and assist the linear movement of the wheel and provides greater flexibility and control on profile depth and width, making grinding easier.