Simple Precision at Your Fingertips3M™ Rubber Sanding Block helps you get that personal touch with 3M™ abrasive sandpapers. Designed to accommodate sheets that are cut at varying lengths, this pad features an easy to use clip-on attachment system, which makes changing or replacing sheets simple. This firm pad helps to distribute finger pressure evenly, and the high quality materials resist long term wear and tear. Useful Wet or DryThe high quality design of the 3M™ Rubber Sanding Block also allows users to work even in damp situations with any waterproof abrasive sheets. These products are backed with a proprietary durable waterproof paper backing that supports both wet and dry applications.