These are the best sanding belts ever. They run true and they stay flat. And they last. I make charcuterie boards, cutting boards, flight boards, bowls, and boxes. All from hardwoods. I use my edge sander all the time. It is a very important tool in my shop due to my own designs. Along with my drum sander. You have the best service also! I am retired and have been woodworking for most of my life. Thanks, Daniel Check out my small website, lonestarwoodman.com!