One Sandpaper for Multiple Auto Body JobsnFeaturing waterproof paper backing, 3M Wetordry Sandpaper has been a trusted resource in automotive repair since the 1920s. It delivers true versatility even if you're wet sanding one area and dry sanding the next, our 3M Wetordry Sandpaper lets you keep moving without having to switch sandpaper. Today you can choose from a complete range of sandpaper grits for jobs ranging from shaping body filler to final paint touchups. Wetordry sandpaper features our silicon carbide abrasive, ideal for creating a smooth, refined finish. In fact, it delivers a 10% smoother finish vs. conventional 3M sandpaper. Each sheet is durably resin bonded onto a waterproof paper that helps conform to metal, plastic body filler or fiberglass sanding surfaces, whether by hand or machine. This range of sandpaper for wet or dry sanding is excellent for use in the Fill, Paint and Finish stages of our 3M Body Repair System.nnSilicon Carbide Sharp Abrasive with a Refined Touchn3M Wetordry Sandpaper in finer grits features silicon carbide a synthetic mineral that is very sharp and commonly used for low-pressure applications such as paint prep, smoothing of clear coats and as an alternative to compounding.Users only need to apply light pressure to obtain a consistent scratch pattern desirable for final finishing.nnAbout Aluminum Oxide AbrasivenThe more aggressive grades of 3M Wetordry Sandpaper feature aluminum oxide. Aluminum oxide is popular among collision repair professionals because of its fast cut-rate and long life. This natural mineral makes a tough, durable abrasive that self-fractures during use to expose fresh cutting edges where traditional abrasives can quickly wear down. Due to its high cut-rate, hardness, strength, and low heat retention, aluminum oxide is highly effective for sanding and finishing.