HSS-Co. Vapour-treated. As protection against material weld-on. For stainless material and other high-strength steels. With 32 mm bore Ø with 2 secondary holes 11/63, 4 secondary holes 9/50 and 2 secondary holes 8/45 for Berg & Schmid, Mep, Pedrazzoli, Kasto and Thomas circular saws Tooth profile C: Parabolic tooth with pre-cutter and post-cutter