Designed for use with popular models of single- and dual-head, low-speed surface grinders, the Pro Polish floor polishing system produces high-quality polished surfaces without the need for expensive and complex equipment. The system uses a series of seven 10-in.-diameter diamond polishing pads, which are easily secured to the grinder using Velcro. Polishing pads range from 50- to 3000-grit. Hardeners can be combined with pads, usually 400-grit and higher, to help intensify the brilliance of the floor shine. General Equipment Co.