... , quality guarantee ,long lasting working life time .6, Main market: South America, America , Asia, Mid-east, Europe and worldwide.SpecificationFront:12t/13t ... /37T/38T/39T/40T/41T/42T/43T/50T/54T.Chain :420,428,428h,415,530Material A3steel(SAE Q235),45 ... bags ,carton ,vacuum, packing ,etc ,Main markets Brazil ,Africa ,eastern Asia ,Mid east , south America ,Southeast Asia Note The product model can ...