Feature: 1. Chamfered design of chain, quick bite between tooth tip and chain, greatly improve stability and safety. 2. Chain has its own buckle, which can be installed quickly without tools, and the installation is more secure with tools. 3. Reinforced embedded axle, high rigidity reinforced structure, compact, flexible, not stuck, withstand high pedal force. 4. Chain is fully electroplated, made of high quality carbon steel, quenched and heat treated to enhance wear resistance, surface antirust treatment, anticorrosion, and long lasting luster. 5. High strength alloy chain pieces are used to increase the strength and service life of the chain. Concave pin shaft increases the fitting force of the chain pin. Lightweight structure has agile speed change performance. How to Use: How to choose the right chain and how to identify the chain speed: Method: First observe the number of flywheels of the bicycle, and count how many rows of gears your rear flywheel has. For example, 9 rows is 9 speed, and so on. Specification: Item Type: Bicycle Chain Material: Carbon Steel Weight: Approx.288g/10.2oz Specification: 116 Sections 1/2in x 5/64in Speed: 9 Speed Application: 9 Speed Flywheel Buckle: A Pair of Standard Package List: 1 x Chain 2 x Connecting Buckle