Perfect for polishing marble countertops, granites floor, or engineered stone surfaces where rapid pad changes and vibrations dampening rubber backings is critical Features a central water hole for wet stone polishing and aluminum rubber construction rate for 5000RPM, ensuring compatibility with gemstones edges polishing pad holders Engineered with a twist and quickly changes systems, this 4inch aluminum snails backer pad secure mounts gemstones polishing pad via M14/5/8-11 thread, minimizing downtimes during 5000RPM operations Combines brass threaded durability with ergonomic efficiency, solve common slippage issue in stone processing while maintaining alignment during prolonged grinding tasks Ideal for professional stone fabricators, contractors, and renovations groups requiring efficient tool accessories for heavy duty edges profiling and surfaces finishing, Manufacturer: BULAIDAI