LONGEST LASTING: Quick change discs have long life.Wide selection of grits and grains.Easy to use.Our product are made of premium grain and offer three attachment options with 1/4 inch holder Upgraded ALuminum: Roll lock discs are made for high-quality proffessional aluminum oxide.We have done a lot of testing to give you the most satisfying experience in order to give you best product BEST MATCH SIZE: Sanding discs 2” surface conditioning discs-Coarse/Medium/Fine total 46pcs incloud 1/4 inch shank roll lock disc holder fit die grinder profectly MAX PERFORMANCE: Surface conditioning discs are uitable for stainless steel, alloys, non-ferrous materials, plastics, and fiberglass; useful for auto body and automotive work, such as rotor finishing, and on motorcycles, boats and so on QUICK CHANGE FOR SAVING TIME: Abrasive sanding discs are ideal for deburring, finishing, and cleaning on flat or contoured surface of metals to allow for quick and easy operator assembly. These flap discs are