Made to Take You to the EdgeAbrasives made from 3M™ Wetordry™ Paper Roll 314 are best suited for fine finishing and edge work thanks to its flexibility and fast cutting abrasive material. Its durable, C-weight paper backing provides smooth operation and durability for consistent finishing on edges and contoured parts. The abrasive side features closed coat construction to deliver fine finishes and a waterproof coating to allow use of liquid coolants when necessary.Aluminum Oxide AdvantageThis paper roll uses aluminum oxide, which is a popular choice among industrial professionals because of its fast cut-rate and long useful lifespan. This mineral makes a fast-cutting, consistent 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 on a wide variety of materials in both woodworking and metalworking, including ferrous alloys.Waterproof and Consistent3M™ Wetordry™ Paper Roll 314 uses closed coat construction, which means that a dense covering of abrasive grains are spread across the surface of the paper. This design cuts fast and provides a consistent, fine finish. The waterproof backing also enables the user to rinse areas of the workpiece and the paper during use to prevent dust and debris from clogging the points of the abrasive, while producing a faster cut at the same time. These unique features combine to give you a reliable abrasive that can deliver fine finishes on whatever type of surface you may need to work on.