●The sanding block disc of the HSS version is particularly suitable for sharpening HSS drills or processing other high-alloy steels ●The discs for double grinding machines impress with a long service life, high dimensional stability and high grinding performance ●The straight grinding wheel can be used for deburring, sharpening and edge processing (chamfering, rounding) of high-alloy steels ●Thanks to the integrated reducing sleeves, the ceramically bound sanding block disc can be mounted on almost any sanding block spindle (32/25/20/16 mm) ●Box contents: 1 x PFERD sanding disc HSS / with diameter 175 mm and width 25 mm / bore 32 mm + reducing sleeves / abrasive stainless corundum (AW) / grain size: 80 / hardness K, medium