... , stainless steel 2.Colors:blue,black 3.Service: stock Standard bicycle chain Specification: 1. Simplex: 04B-1, 05B-1, 06B-1 ... , 32B-3, 40B-3, 48B-3, 56B-3, 64B-3 Bicycle Chain 1. Be made of fine steel 2. length: According ... gear, spur gear, bevel gear, gear rack, worm gear, sprockets,chains, bearings. Please contact us to get further information. Thank you!