PRO SOURCE PS-400313 Green floor stripping pads are for heavy-duty scrubbing or for light stripping. Removes dirt and scuff marks before recoating. Works with all standard floor machines. Color-coded by application: green indicates scrubbing, black indicates floor stripping, maroon indicates extra heavy-duty floor stripping, tan indicates light cleaning/buffing, red indicates light cleaning/high gloss buffing, and white indicates polishing. Heavy-duty scrubbing or light stripping. Sold as a pack of 5. Works with standard floor machines. 13 inches in diameter.