... , 63 series .2) Corresponding models range:605-6015,625-6215,6300-6315.3)Material:Gcr15(Chrome steel)--China,(AISI)52100---American ... ,6203,6204,6205,6206,6207,6208,6209,6210,6211,621263series:6300,6301,6302,6303,6304,6305,6306,6307,6308,6309,6310 ...