Abranet discs are the best choice for sanding certain materials like putty, lacquers, and primers, and usually has a longer lifespan than regular abrasives. Abranet provides dust-free dry sanding either with a machine or by hand. Abralon discs have increased flexibility and are best for finishing smooth surfaces or angled surfaces without leaving pressure marks. Abralon discs are compatible with wet and dry sanding and machine or hand-sanding. We also sell self-adhesive PSA discs. PSA, which stands for Pressure Sensitive Adhesive, allows for bonding without solvent, water, or heat, but rather only uses pressure to activate it. Feel free to contact us with any questions about your sanding product needs! Check out our other great sanding products, like sandpaper rolls, sandpaper sheets, and sanding belts.