What Are Hook and Loop Sanding Discs? | Peel, Stick, Sand

Hook and loop sanding discs fasten to a sander’s backup pad with a Velcro-style grip, letting you swap grits in seconds and reuse each disc until it wears out.

If you’ve ever fought with adhesive-backed sandpaper that curls, slides, or refuses to release, hook and loop discs are the upgrade. Instead of sticky backing, these discs carry a soft nylon loop surface that grips a matching hook-faced pad on your sander. Press it on, sand, peel it off, and stick on the next grit. 3M calls its version Hookit, and the system has become the default for orbital and random orbital sanders across woodworking and auto body shops.

The trade-off is simple: you need the right backup pad. A hook and loop disc won’t stick to a plain adhesive pad, so the two halves always travel together. Here’s what to know before you buy.

How Hook and Loop Sanding Discs Work

Think of the fastener side of a heavy-duty glove. The disc’s backing is brushed nylon loop; the pad on your sander is covered in tiny plastic hooks. When you press them together, the hooks grab the loops and hold the disc firmly in place during high-speed orbits.

3M’s Hookit system uses J-shaped hooks on the pad that grip the nylon loop backing of the disc. The attachment is quick, secure, and cleanly removable. When a disc wears out or you need a finer grit, you peel it off and press on a new one — no scraping adhesive residue, no solvents.

That reusability is the core advantage. A hook and loop disc can be pulled off, set aside, and reattached later, again and again, for the full life of the abrasive. With adhesive discs, removal often destroys the disc or leaves a sticky mess on your pad.

What’s The Right Backup Pad?

Hook and loop discs are a paired system, not a universal fit. You need a backup pad with a hook face designed for these discs. 3M sells dedicated Hookit disc pads, such as the 5-inch model 28662, which features a J-hook face and works with Hookit sanding and finishing discs.

Do not pair these discs with a Stikit pad. Stikit is 3M’s adhesive-backed system, and the two attachment styles are not interchangeable.

The most common sizes are 5-inch and 6-inch discs for random orbital sanders, matching the pad diameters from brands like DeWalt, Makita, and Festool. Always match the disc diameter to your pad exactly.

Hook and Loop Vs. Adhesive Discs

Adhesive-backed discs still exist for a reason: they cost less per disc and sit perfectly flat. But hook and loop wins on convenience and finish quality in most sanding situations.

3M notes that hook and loop discs are ideal in work areas where dust, dirt, or flying debris could contaminate an adhesive surface. They also tend to leave a finer finish than adhesive-backed options.

For most DIYers and pros running an orbital sander, the speed of grit changes alone justifies the higher per-disc cost. When you’re working through 80 to 220 grit on a project, those quick swaps add up to real time saved.

How To Install And Remove Hook and Loop Discs

Using these discs is about as easy as it gets. First, make sure your sander’s pad is clean and free of dust — debris under the disc causes wobble and uneven sanding. Then center the disc over the pad and press down firmly from the center outward. You’ll feel the hooks engage.

To remove a disc, grip the edge and peel it off. It releases cleanly without tearing or leaving residue. If a disc has been on the pad a while, the hooks can settle in — lift from one edge and pull steadily rather than yanking.

Store used discs flat or in a stack between sessions to keep the loop backing clean. A dirty loop surface loses grip, so brush off dust before reattaching.

One tip from the shop floor: keep a spare backup pad on hand. Pads wear out — hooks bend and break — and a worn pad wrecks disc performance. When discs start slipping or spinning on the pad, replace the pad, not the discs.

If you’re ready to stock up, our tested roundup of the best hook and loop discs covers top picks for wood, metal, and paint prep.