●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 ●Box contents: 1 x PFERD sanding disc HSS with diameter 300 mm and width 40 mm / bore 76 mm / abrasive stainless corundum (AW) / grain size: 80 / hardness K, medium