Features1The double bridge type chain can improve the tensile and torsion strength of the chain, and the speed change is agile and smooth. 2The chain is fully electroplated, made of high quality carbon steel, quenched and heat treated to enhance wear resistance, rust and corrosion resistance. 3The chain waist adopts chamfer design, the tooth tip and the chain piece quickly bite, the stability and safety of the chain are greatly improved. 4Strengthen the embedded axis, high rigidity strengthened structure, compact, flexible and not jammed, withstand high pedaling force. 5The chain comes with a hook and loop buckle, which can be installed quickly without tools, and it is safe to install with tools.SpecificationItem Type: Bike ChainMaterial: Carbon SteelSpecification: 116 Sections 1/2in x 11/128inSpeed: 12 SpeedApplication: 12 Speed FlywheelHook and Loop Buckle: A Pair of Standard BucklesFeatures: High Strength Alloy Chain Pieces Are Used to Increase the Strength and Service Life of the Chain, the Concave Pin Shaft to Increase the Interlocking Force of the Chain Pins, Lightweight Structure and Agile Speed Change PerformancePackage List1 x Bike Chain2 xHook and LoopLink Block