... 5hp, speed 300-1600rpm; Vacuum cleaner; Diamond tool. wet stone grinding machine, stone grinding equipment Performance1, Aluminum alloy gearbox guarantee quality; ... Ideal for1, Smoothing rough surfaces or trowel marks;2, Grinding concrete or terrazzo;3, Repairing damaged concrete slabs;4 ... , Removing epoxy thin-coats;5, Grinding sharp grout, mastic, flint and granite;6, Leveling ...