Aluminium Oxide abrasive, double resin bonded on 'C' paper backing. Good anti-clogging properties. Long life and low heat in sanding processes. Gold Discs are a durable product, suitable for sanding at high speeds. Gold discs are an all-round sanding material that can be used for many purposes. The discs are designed to achieve an optimal sanding result, preventing clogging. Suitable for use on wood, metal, composites and automotive materials, used widely in the Automotive, Aerospace, CV, Rail, Marine and Woodworking Industries.