A well-prepared surface is the key to achieving a long lasting and durable coating with your Al's Liner truck bed lining. To help you get a perfect preparation done easily every time, We developed the Al's Liner cup brush, a professional series abrasive nylon bristle cup brush. Its tough nylon bristles do a fantastic job sanding, scuffing, and blending surfaces. The Al's Liner cup brush attaches to a Pneumatic Rotary tool and will speed up the sanding time on your next project while ensuring that your surface is properly prepared. This cup brush will quickly scuff up the surface area to be sprayed, and is strong enough to last for several Al's Liner projects. The Al's Liner cup brush lasts up to 10 times longer than a standard wire brush. It can be used to clean, polish, and prep metal, wood, aluminum and plastic. The cup brush was designed for truck bed prep, but is also great for removing paint from wood and metal surfaces, surface rust, prepare plastics, prepare other metals for primer and paint, clean unfinished tile, stone, cement, and more. The Al's Liner cup brush saves you lots of time when prepping.