astro pneumatic tool 4606 6-inch pu velcro backing pad astro pneumatic tool ast4606 features: -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 polyurethane5/16"-24 unf thread. maximum rpm: 10,000.. product type: -backing pads. use: -buffing/polishing. quantity: -single. dimensions: overall product weight: -1 pounds.