Woodworker Sanding Pad Repair Disc 2" (50mm) or 3" (75mm)
 
Available in 2" (50mm) and 3" (75mm).
 
If you're like me, you have a half dozen sanding pad holders you paid a small fortune for sitting in a drawer somewhere because the hook and loop has worn out. Here are spare injection molded, nylon repair discs with industrial glue already applied to the back.
 
All you have to do is lightly sand away what's left of the hook and loop on your old holder and then peel the back off and stick on the new one. You're back in business.