Features and Benefits: Dual action random orbital backing pad for car detailing; With unique tapered 29-degree edge, offers excellent edge flexibility; Works with angle DA random orbital sanders; Pad is made of polyurethane; Max. RPM: 10,000.; 6 in. PU PSA Backing Pad.Dual action random orbital backing pad for car detailing.With unique tapered 29-degree edge, offers excellent edge flexibility.Works with angle DA random orbital sanders.Pad is made of polyurethane.5/16"-24 UNF threadMax RPM: 10,000.