To use these Weha Matrix dry honeycomb diamond polishing pads, first make sure your polishing machine has a maximum RPM of 5000. You can use them dry on granite, marble, quartzite, travertine, and other natural stones. If you want, you can also use them wet on these natural stones as well as engineered stone. When you hold the pads, you'll immediately sense their quality. Notice the domed shape of the lower - grit pads, which gives them extra life. Be careful not to exceed the maximum RPM to avoid damaging the pads. After use, clean the pads thoroughly to maintain their performance. Store them in a dry place to prevent any rust or damage to the diamond particles.