Sintered (metal bond) Diamond Grinding Wheels are the longest lasting diamond wheels for cabbing available today. When you need to grind hundreds of cabs sintered (metal bond) wheels are an excellent investment that will provide: best performance, quality, consistency and overall ROI (Return on Investment). They have a full 3mm of diamond matrix, and solid aluminum cores. These wheels will typically last like many plated or braised diamond cabbing wheels put together. Sintered diamond wheels will also grind each cab aggressively (first cab as fast as the last). When using sintered diamond wheels, we recommend using one diamond mesh/grit size larger for sintered diamond tools as compared to plated or brazed wheels. Reducer rings available to fit most machines.