I had been dealing with "velcro fail" on my random orbital sander - well, not really fail, but I hadn't figured out how to comb the fuzz out of the sander disk surface and arrange it neatly. This inter-disk really does the job of holding on to my sanding disks. I was a little concerned the first time I switched disk grits; I thought the this new inter-disk would pull off. Don't worry, it doesn't. Good thing to have and save your disk sander for a long time. I wish I'd had this from the start.