All saw blades are according to EN 847-1 Body (thickness/material/hardness): 1.6-2.0mm / 50# Steel/65Mn steel/ HRC 38-46° Teeth (material/hardness): YG 8 / HRA 86-93° Size:190mm Tooth No.:24T/30T Arbo Size:20/22.23mm Teeth type:ATB > Fully automatic brazed teeth > surface control > sandblast clearly and clean > anti- rust protection > transparent teeth protection (which can pass chemical limitation!) > carbide tips made of new material ! Recycled material is not allowed to be used ! > True running accuracy > True plane accuracy > High performance > High durability