3M™ Hookit™ paper disc 751U features an aluminum oxide abrasive that delivers excellent cut-rate and life. This abrasive is built on e weight paper backing and features an open coat construction that reduces loading, making it excellent for tough jobs like stripping paint to metal and shaping fresh filler. 3M™ Hookit™ attachment allows for quick and convenient disc change outs. 3M™ Hookit™ paper disc 751U features an aluminum oxide abrasive mounted on e weight paper backing. This abrasive disc is extremely durable for sanding jobs including shaping plastic filler and putty, sanding clear coats, removing paint, and scratch refinement on metal, plastic, and fiberglass. The open coat construction - abrasive grains are spaced so that dust and debris can collect in the spaces rather than on the abrasive points - helps prevent loading even when sanding fresh plastic filler. The Hookit™ attachment system has a hook and loop feature which makes attachment, removal, and re attachment clean and easy. It also facilitates use and reuse of the abrasive for maximum product life. Hookit™ sheets and discs have a brushed nylon loop backing of the type most commonly used in everyday hook and loop applications. A range of Hookit™ file tools, hand pads and disc backup pads features hooks which grip the brushed nylon loop backing. It's simple: just attach the abrasive and start sanding. It removes just as cleanly and easily. The Hookit™ system is designed for work spaces and applications where adhesive backed abrasives may become contaminated by dust, dirt or debris. Hookit™ 7010325585, Dust-Free Hook and Loop Open Coated, Series: 751U, 5 in Diameter Disc, 40 Grit, Aluminum Oxide/Ceramic Abrasive, Paper Backing, E-Weight Backing Weight, 5 Vacuum Holes