5 in. 80-Grit Universal Hole Random Orbital Sanding Disc with Hook and Lock Backing (50-Pack)

A:  Hi Frank, These discs will work with any 5" ROS sander.

A:  Hi Wando, 60, 80, & 120 Grits are used for material removal.

A:  Depends on the material the paints and how much paint is on it..wood I use 150 grit

A:  60 or 80 grit is recommended

A:  It depends on the surface underneath. If you are using an expensive hard wood, then no coarser than an 80 grit to start, or use a solvent to remove the paint. I recommend having several grit sizes (80 and up) and test a small area.

A:  Yes they work fine for wood and a soft metal like aluminum

A:  Hi GKerr! Yes, these sanding discs can be used on aluminum. Thanks for the great question!

A:  yes.

A:  They will work on aluminum.

A:  cloth loop material

A:  Cloth It is pretty tough. Grit stayed attached and only had to change the disc when the lacquer finish I was sanding became full of globs of the lacquet

A:  When the sanding grit wears off, the pads have a paper type base however the backing is a nylon type fuzz which is the 'loop' in the hook and loop Velco type attachment method.

A:  The backing material is fuzzy cloth. Similar to Velcro

A:  The backing of this item is paper.

A:  The grit is bonded to paper and there is a fibrous material on the backside of the disc that grips to the sanders pad. If your asking if it is a pressure sensitive material or a bare paper back where you have to apply adhesive the answer is no.

A:  cloth

A:  It is a fabric. It is the fuzzy side of hook and loop.