German made Hook and Loop 5" Sanding Discs for use with Random Orbital Sanders used for moderate to strong removal of stock. Made of open coat aluminum oxide abrasives. Can be used on wood , metal , fiberglass and more. The 8 hole pattern is an industry standard and will fit the following makes and models : Ryobi RS281, Rigid R2600, Milwaukee 6019-6, Makita B05012K, Bosch 1295DVSK, DeWalt D26433, Bosch 3725DEVS, Hitachi SV13YA, Metabo SXE450 and more. The lower grits are used to remove existing coatings ranging from paints, varnishes, glazes and shellacs. It can also be used on synthetic surfaces as well such as fiberglass, cured epoxies , urethanes and acrylics as well. Sold in boxes of 100 pieces per grit. Hook and loop discs are an excellent choice of abrasive for fast grit changes and re usability.