1.Grade:304.316L.310S.C276.904L.2507.2205.Monel400 2.size:M6-M64 ... sizes are also available. 2.Materials option: Stainless Steel C276, 904L, 304, 304L,310S, 316, 316L, 321, 317L, 2507, 2205, 254SMO, AL6XN, 1 ... .4501,1.4529.Super duplex stainless steel F55, F51,F53 HastelloyB ...