Feature:1. Applicable Speed Model: 8 speed bike chain is suitable for 6 7 8 18 21 24 speed bike models. Double bridge design for higher tensile and torsional strength of the chain, and sensitive and stable speed change.2. Improves Stability and Safety: Bike chain waist is designed with chamfering, and the tooth tips engage with the chain pieces quickly, which greatly improves stability and safety.3. High Strength: Road bike chain special carbon steel material, tensile strength 9537N and ejection force: 1801N to ensure the high strength, and able to withstand high pedal forces.4. Electroplated Polishing: Mountain bike chain surface electroplated polishing provides corrosion and rust protection. The inner and outer plates and pins are electroplated.5. 116 Links: Carbon steel bike chain is very suitable for replacing old or damaged chains on the bike. 116 links chain length provides more reserves for the subsequent upgrade of the transmission system.Specification:Item Type: Mountain Bike ChainMaterial: Carbon SteelApplicable Model: Most Mountain Bikes, Road Bikes, Folding Bikes, etc.Applicable Speed Model: 6 7 8 18 21 24 Speed Bike ModelsShaft Length: Approx. 6.1mm / 0.24in.Package List:1 xMountain Bike Chain2 x Chain Connector Note:Please allow some errors due to manual measurement.