Made of malleablecastiron,Stainless Spec:M6.M8,M10 Finish:galvanized or H.D.G Use:Mining Machinery,mining operation Made of malleablecastiron,StainlessSpec:M6.M8,M10Finish:galvanized or H.D.GUse:Mining Machinery,mining operation Standards:DIN580,JIS type,US type and so on din 580 eyebolt