With these backing pads, COMBICLICK tools can be used on the most common angle grinders. The different hardnesses are marked with a color code: CC-GT (medium) = black CC-H-GT (hard) = blue For processing stainless steel (INOX), preferably use version CC-H-GT. This achieves very high edge strength at higher working pressure. Product benefits: Significantly reduced thermal load due to the geometry of the cooling gaps. High efficiency due to minimal tool change times.