Norton Stick and Sand abrasive disc's adhesive backing sticks tight and holds securely to the back-up pad of the sanding tool. Peel off the protective backing, stick it on and sand. Remove disc when worn or job is complete. Discs can be used again provided the adhesive backing is free from contaminates. Durable, sharp aluminum oxide abrasive for aggressive, cool cut. Non-pigmented, water-based, anti-clog stearate coating resists loading and won't contaminate finish. Pressure-sensitive adhesive backing allows for quick and easy abrasive disc changes. Very Fine for very fine sanding of bare surfaces, primer and sealer sanding.