Sungold Abrasives49329 Cork Portable Sanding Belts for Glass Polishing (5 Pack), 4"X24",

These are working great.Just be sure to pay close attention to the instructions in the description for breaking them in. It is just as tedious as it sounds but when you're done, you've got a superb belt that holds your abrasive medium well.I've got 4 belts broken in with 4 different compounds, and I think I'm going to experiment with the 5th and see if I can get it to take a wax/moly compound that I like to mix up for my tools and use it to finish off all of my bladed tools that need to be sharpened periodically. They should end up super sharp and super slick. Can't wait to see how well it works.These are Fuji Star belts. If you haven't used Fuji Star before they're some of the best. They have good mediums, good binding agents, good seams, and the cloth backing is just as strong as any other manufacturer but feels like a belt that's already been well broken in, so you don't have to worry about them developing a memory nearly as much and having "humps" that need to be worked out by letting the sander run for a minute or two after it's been stored a while.