For general purpose sanding versatility, choose light-weight paper Norton No-Fil Durite A413 Discs. For use on random orbital and rotary sanders, typical applications include preparing primed and painted surfaces for finishing, stripping primer and paint, sanding plastic and fiberglass, light weld blending and deburring, bare wood sanding, and finishing metal of all types. Available in Stick and Sand (PSA - pressure sensitive adhesive) disc rolls.