Proxxon sanding pads for OZ1 115/E, number 38520 detail sander: Contains 50 each 80-Grit bulk 2-1/2 by 2-1/2 by 2-1/2-Inch (65 by 65 by 65mm) 80-Grit sanding pads. Durable aluminum oxide grit attached to special backing paper with adhesive for quality sanding with high lifetime.Easy hook and loop system for ease of changing padsProxxon sanding pads work well with metal, non-ferrous metals, wood and plastic