Review on 🔥 Jucoan 60 Pack 6 Inch Sanding Discs - Premium Assorted Grits Hook and Loop Aluminum Oxide Sandpaper for Professional Grinder Polishing - 10 Discs per Grit (80/100/120/180/240/400) by Lawrence Feldman

No product information. I hated them with a low rating when I couldn't use them and returned them upon receipt after seeing the problem. It is actually the rating on the Revain listing that was misleading and led me to purchase. I bought a Wen grinder and needed grinding wheels to use it. The Revain list lists these discs as "commonly bought" with this grinder, even though they don't work with it. Sander requires discs with an adhesive backing and they have a Velcro backing - not compatible. The discs will likely fit each grinder, but Revain should not advise you to buy them together if they don't work together. You need to be more careful with offers to buy. I've seen the same problem before when grouping other incompatible products.