The term usually refers to discs that share a common spec -- a common size is a 5-inch diameter with an 8-hole dust pattern and hook-and-loop backing (often referred to as a 5x8).

Product Name: Hook and loop sanding pad online TGR 5 online, Sanding Pad Conversion Disk 5 online, Miady 5 Inch 8 Hole Hook and Loop Sanding Discs 100PCS 120 240 320 600 800 Assorted Grits ...

This nine-inch circular pad is compatible with any extension pole, and thanks to a handy hook-and-loop backing, you can remove and attach replacement sanding discs in seconds. Our favorite feature ...

Orbital sanders are built with a hook and loop pad that uses removable sanding discs, so as long as you have a wide enough range of sanding discs on hand, the tool is versatile enough for heavy ...