With this backing pad, COMBICLICK tools can be used on commercially available angle grinders. The COMBICLICK system consists of a specially developed backing pad and a rugged mounting system at the back of the tool. The unique geometry of the cooling slots ensures high air throughput, which in turn considerably reduces the thermal load on the abrasive material and the workpiece. Compared with conventional tools, the quick-mounting system, robust holder, secure tool-locking feature and integrated cooling system together achieve a workpiece temperature that is 30 % lower, a 25 % higher stock removal rate, a 30 % longer tool life, and better utilization of the abrasive material. Hardness CC-H-GT (hard) = blue