For Excellent Results, When Excellent Results Aren#39;t EasyFor leveling minor dust nibs, adjusting mismatched orange peel, light sanding on acrylic lacquer paint and other sanding jobs where burning or sanding through clear coat and paint are primary concerns, our 3M™ Wetordry™ Abrasive Disc 401Q makes excellent results easier: it's durable yet flexible, with a sharp cut that leaves a refined finish. The durable waterproof backing helps create consistent patterns that are easily buffed out. And the silicon carbide grain is suitable for a full range of non-aggressive sanding and polishing jobs on clear coat, plastic and metal, including areas that require hand compounding and for sanding dark colored paints.Light, Smooth, Waterproof BackingOur 3M™ Wetordry™ products are backed with a durable waterproof paper backing that supports wet and dry applications. Lighter weight than cloth and smooth rather than textured, the backing is preferable for lighter applications such as finishing and paint prep. At the same time, many such applications produce a significant amount of dust, clogging the abrasive points and creating an inferior work environment. These effects can be minimized by sanding with water to rinse dust away.Our Fastest-Cutting Abrasive MineralSilicon carbide is a very hard mineral that cuts extremely fast. In fact, it is our fastest-cutting mineral abrasive. It features sharp points that fracture easily, resulting in freshly exposed sharp edges that produce a smooth, professional-looking finish.Better Science for Better Sanding from 3MWe put plenty of science behind our 3M™ Wetordry™ Abrasive Disc 401Q - and not just to improve your finished work. These abrasive discs make the entire sanding process easier, from the waterproof durability of each disc during wet sanding to faster cutting and easier buffing for faster production times and less labor cost. It's another way that 3M applies science to the lives of auto body professionals.