I am very happy with the 16" x48"" belts, they are the best I have ever used, and I have tried a lot of different brands (including 3m). My son and the other employees are very happy with the sanding discs, which is a relief to me, all I ever heard before was complaining of the lousy quality. It's a really good feeling to buy a product that I'm getting my moneys worth. That doesn't happen much in today's market. will placing another order very soon, thank you!