150 Pieces Multi-Grit Grinding Wheel Set - Our grinding wheels offer you many different grit options. You will receive the 150 sanding discs in 10 different grades, including 60 grit, 80 grit, 100 grit, 120 grit, 150 grit, 180 grit, 240 grit, 320 grit, 400 grit, 600 grit. The higher the number, the finer the grit HIGH QUALITY CONSTRUCTION - Made of high quality aluminum oxide abrasive which is durable and anti-clog. The aluminum oxide grain also ensures a fast cut and a smooth finish to your project 8 Hole Design - The back design makes it easy to replace the grinding wheels and extends the life of each grinding wheel. 8 holes are designed for efficient dust extraction Universal Compatibility - The sanding discs (125mm) are suitable for universal orbital sanders such as Bosch, Makita, BLACK + DECKER, etc. Wide Range of Uses and What You Get - Using your new sanding discs, which are excellent for staining and finishing metal and non-metals, wood, rubber, leather, plastic, stone, glass