Size: 5 Inch(125 mm) 800 Grit, 70 Pcs in totalApplicationsThese silicon carbide sandpaper discs are good at rust removal, weld grinding, chamfering and deburring, and surface brushing of various metals such as stainless steel, alloy steel, cast iron, aluminum, and titanium alloys. It is also suitable for hardwood, composite material sanding and automotive putty shaping. It is an good choice for metal processing plants, welding workshops, automotive repair, and shipbuilding; it can be used with an orbital sander, a disc sander, a rotary sander, a pneumatic grinder, etc.Features Durable Silicon Carbide Material:The sandpaper disc is made of silicon carbide abrasive, which can keep sharp for a long time during use, has excellent wear resistance, efficient heat dissipation, and smooth and long-lasting sanding. Hook and Loop Backing: The back of the sanding disc adopts a hook-and-loop base to increase the friction and fit during sanding. The hook-and-loop base can effectively disperse heat and extend the service life of the sanding disc. Non-porous Design: The non-porous sandpaper provides a larger and more effective sanding area, with a flat surface and no gaps, which fits more closely with the workpiece to avoid debris embedding and achieve better sanding results.Useful TipsDuring the sanding process, if the dust is too heavy, you can spray a small amount of water on the sanding area.