Dust Devil V3 DA backing plate Size 5in(123mm) Hole Pattern Multi-Hole Thread M8 Work with EX605, EX610-5/15 Soft Urethane molded with medium density Applicable for foam pas & wool pads Hook life time 5000+ Well balanced for smooth polishing ? Multi-hole pattern for fast heat elimination Work with ShineMate EX605, EX610-5/15 orbital polisher