3M™ Cubitron™ II Stikit™ Film Disc Roll 775L features 3M Precision-Shaped Grain, a revolutionary advancement in abrasive technology. The triangular shaped ceramic mineral is designed to slice through the substrate, rather than gouging or 'plowing' like conventional abrasives. This advanced technology results in a disc that cuts up to 2x as fast and lasts up to 6x as long as conventional abrasives.These discs are ideal for a broad range of applications focused primarily on stock removal and are effective on a wide variety of substrates, including metals, composites, gelcoat and whitewood. The film backing offers greater tear-resistance than paper discs, for additional durability and edge retention. For best results, pair 3M Cubitron II Stikit Film Disc Roll 775L with 3M Elite Random Orbital Sanders. 3M Stikit System eliminates the time-consuming task of applying adhesive to the disc backing. These high-quality, coated abrasive products come ready to use with a pressure sensitive adhesive coating on the backside so that attaching them to your disc pad is as simple as pressing on a sticker. A pressure sensitive adhesive means the disc can be peeled off of the disc pad easily, leaving a clean surface for your next disc. A Stikit Disc must be pressed onto a 3M Stikit Abrasive Disc Back-up Pad (also called a disc pad and sold separately) that is attached to a disc sander, random orbital sander, or stationary disc sander.