Dual action orbital sander pad. Super polyurethane replacement backing pads for random orbital sanders. Medium density standard profile with ultra tough fibreglass back plate. Max RPM= 10000. Standard profile V. ELCRO Tough back plate offer excellent dust extraction with self stick. Abrasive Diameter: 150 mm. Surface Diameter: 148 mm. Holes: 8 Holes E120/9 holes. Thread: 5/16 UNF & 8 mm. Foam Layer: 12 mm. Density: Medium. Max RPM: 10000.