Product Description 3M Hookit Paper Disc 236U offers aggressive cut and long life on a premium aluminum oxide disc with a durable edge and convenient Hookit attachment. A go-to product in many industrial operations, this durable disc is well suited for high production sanding operations as well as general purpose applications on paint, primer, wood, metal, plastic, and composites, including fiberglass. From the Manufacturer 3M™ Hookit™ Paper Disc 236U offers aggressive cut and long life on a premium aluminum oxide disc with a durable edge and convenient Hookit attachment. A go-to product in many industrial operations, this durable disc is well suited for high production sanding operations as well as general purpose applications on paint, primer, wood, metal, plastic, and composites, including fiberglass. Designed for use with a random orbital sander, the strong C-weight paper backing resists tearing and edgewear during aggressive sanding, and the disc is resin-bonded for heat-resistance, further increasing life and cut. These discs also feature an open coat and a load-resistant coating to enhance dust management and cut-rate. A load-resistant coating allows the disc to continue cutting even when sanding softwoods, paints, and other materials that would, otherwise, clog the surface of the disc and hinder sanding ability. Loading is further reduced by an open coat, which means the abrasive grains are spaced slightly apart so that dust can escape rather than obstructing the cutting edge of the grains, thereby optimizing cut-rate and disc life. Sanding discs come in a variety of forms to fit various power tools and disc pads. A 3M™ Hookit™ Disc conveniently and firmly attaches to a 3M™ Hookit™ Disc Pad (sold separately) on a random orbital sander. Hookit discs are quick and easy to change when switching from one grade to another, and can be reused again and again for the extent of the disc life (whereas adhesive-backed discs are typically discarded after one use because the adhesive backing will not re-adhere a second time). Aluminum oxide is a popular choice among industrial professionals because of its fast cut-rate and long life. This mineral makes a tough, durable abrasive that self-fractures to expose fresh cutting edges, whereas traditional natural abrasives dull more quickly. Due to its fast cut-rate, hardness, and strength, it is widely used in grinding applications in addition to sanding and finishing applications. Aluminum oxide is suitable for a wide variety of materials in both woodworking and metalworking, including ferrous alloys. For more than a century, 3M has applied innovation and technology to improving our customers’ lives and supporting their business goals. Today the company, from its headquarters in St. Paul, Minnesota, serves industrial and commercial customers and consumers in nearly 200 countries. Abrasive Systems products, including a complete line of coated abrasives, microfinishing and microreplicated abrasives, and hardware accessories, provide the finishing touch for almost any surface modification application. The 3M brand, across thousands of products, represents consistency, superior quality, and value.