This Tungsten Carbide-Tipped (TCT) circular saw blade is hardened and tempered to ensure a long life. High-quality precision-ground carbide teeth make the blade robust for rapid cutting. Designed for use on hardwood softwood MDF chipboard and plywood. Compatible with most 165mm circular saws with a 20mm and 16mm bore including Stock No. 55519 89451 and 57341. EN847-1 Standard.PTDDRPDIR20603