If you wish to buy a plate to work with a hand-held machine, the most important thing is to choose the right bush hammering machine. These are the technical specifications needed to bush hammer properly. Speed from 2000 to at most 3000 rpm. It should never exceed 3000 rpm. Our hand-held plates come equipped with a standard M14 connector bolt. We can also supply them with 5/8″ bolts if you indicate it on the order. The materials that can be worked on with our plates include: marble, limestone, sandstone, granite, concrete and artificial stone.