Auto body pros and woodworkers, this ProductionShop sandpaper roll is exactly what you need for professional finishing work! The 400 grit gold sandpaper comes in a convenient 12-yard continuous roll that's 2-3/4 inches wide - perfect for longboard sanders and various sanding tools. The pressure-sensitive adhesive (PSA) backing makes application super easy - just peel off the protective liner and stick it to your sander. The aluminum oxide corundum with zirconia alumina provides a fast, long-lasting cut with consistent scratch patterns that won't clog up easily. This stuff works great on pneumatic air file sander shoes, firm or flexible longboard file boards, hand sanding blocks, Dura blocks, and pretty much any tool that uses PSA sandpaper. Whether you're working in auto body repair, metalworking, woodworking, marine industry, drywall, or just doing projects around the house, this sandpaper delivers professional results. The film backing is durable and flexible, standing up to heavy use without tearing. ProductionShop offers this in a full range of grits from coarse 40 to extra-fine 600, so you can get exactly what you need for each stage of your project. The 400 grit is perfect for that final smoothing before painting or applying finishes. Seriously quality stuff that'll save you time and money compared to cheaper sandpapers that wear out too quickly.