It is mainly used for portable grinder and hand-held angle grinder. Fix it on the bracket with "Velcro". Used for grinding and polishing stone, granite, marble and concrete. The diamond layer structure is "honeycomb", which is installed on the ceramic grid to prevent the stone and disc from overheating, and discharge the sludge from the polishing area in time. Turtle grinding and polishing starts with 50 diamond grains and ends with 3000. The completion stage is buff.