1. Color: black or others optional 2. Size: as required. 3. Length: as required. 4. Be made of carbon steel or optional we sell all kinds of bicycle chain. in different model. 408, 410, and normal1/2x1/8x114l, 112l, etc.cand mtb chain 1/2x3/32x116l chaindifferent weight and quality with differentpacked.if you have anyinteresting in these chain, pls contact us