Diablo's new SandNet? discs with reusable sanding technology are the most advanced sanding discs on the market with 10x longer life versus standard sanding discs. Each SandNet? discs features a clog-reducing net design coated in premium aluminum oxide grit for fast material removal while reducing material build-up. The SandNet? design is easy to clean and reuse multiple times by simply shaking, vacuuming or rinsing the disc to remove any build up. The 50 pack of SandNet? discs includes a free connection pad for easy attachment to tool. Ideal for sanding wood, metal, plastic and solid surfaces.