These 17-inch double-sided copper grinding discs are supplied for use with compatible STR floor preparation machines. Typical applications include grinding and texturing concrete, removing rubber, ice and dirt, and removing surface laitance from concrete floors.

The discs are listed in four grades: 7-grit coarse, 16-grit medium, 24-grit medium and 36-grit fine. W H Surface Preparation lists these as sales items rather than hire equipment.