Check the listing for details. 3M Hookit 236U Hook & Loop Disc 55595 - Aluminum Oxide - 6 in - P320. Condition: New. Listed at 40.00 USD. Introducing the 3M Hookit 236U Hook & Loop Disc 55595, a top-quality sanding disc that is perfect for metalworking and other related projects. This product comes in a disc diameter of 6 inches and has a grit (ANSI) of 320. The abrasive material used in this sanding disc is aluminum oxide, which ensures smooth and efficient sanding. With a unit quantity of 50, this hook-and-loop disc is perfect for businesses and industries that require a large quantity of sanding discs. The abrasives type for this product is coated, which guarantees durability and long-lasting use. The brand, 3M, is a trusted and reliable name, known for producing high-quality products. This sanding disc is perfect for use in a variety of industries, and will surely exceed your expectations.