The COMBICLICK® system consists of a specially developed backing pad and a rugged mounting system at the back of the disc. The backing pad allows COMBICLICK® discs to be used on most available angle grinders. The special geometry of the cooling slots ensures high air throughput, which considerably reduces the thermal load on the abrasive material and the workpiece. The quick-mounting system, rugged fixture, secure attachment of the disc and optimized cooling system help to provide up to 30% lower workpiece temperature, up to 25% increased stock removal, up to 30% longer disc life and improved utilization of the abrasive. PFERD fiber discs are manufactured in accordance with ISO 16057 in shape A1 version F under the designation "vulcanized fiber disc". Very flexible and adaptable due to scalloped-edge outer contour shape. Helps prevent cutting into the workpiece. Active grinding additives in the coating substantially improve the stock removal rate, prevent loading, and result in cooler grinding.