The PCD grinding cup wheel is designed for multi-coating removal, it removes stucco, glue, addhesives, mastic, epoxy, waterproofing membrane and other coatings from a concrete base. It can also be used for thinset, grout, mortar, VCT, carpet glues removing. The pcd segment is harder and more aggressive than normal diamond segments, it saves your time doing large project and has little segments wearness to ensure longer product life.