... ,leveling,grinding teeth 1.Product informationT.C.T Circular saw blade for copper:Including:body, carbide tips.Material:65Mn.Process:hear treatment,leveling ... etc.Surface treatment:polishing.Advantage:independant R&D grinding machine for grinding teeth. As following is usual type in the market ... show: Top Grade HARD 65mn T.C.T Circular Saw Blade for Cutting Copper