Size: The size of each missing link is 20 x 5.5 x 7 mm; the bicycle link is 20 mm long, 5.5 mm wide, and 7 mm high; missing connection model: CL555 Compatibility: Since the bicycle width of the 11-speed chain is 5.5 mm, this missing link chain is compatible with all 11-speed chains. Durable material: The missing ring is made of durable stainless steel, suitable for durabilityHumanization: These bicycle chain connectors can be used repeatedly, easy to disassemble and assemble; suitable for mountain bikes and road bikes Quantity: 3 pairs of stainless steel chain links, a total of 6; packed in a bag, easy to carry and avoid loss Product description 3 missing links for bicycles are used for 11-speed chains. Durable: The bicycle chain links are made of stainless steel and are durable. These bicycle chain connectors can be reused and are easy to assemble and disassemble the chain. How to confirm if you are using a bicycle: How many parts of the transmission gear on the rear gear plate fit how many speed chain links. Aspect: 11-speed missing connecting rod: The connecting rod model is CL555, each connecting rod is 20mm long, 5.5mm wide and 7mm high. Used to: Because the bicycle width of the 11-speed chain is 5.5mm, the 11-speed missing link chain can be used for all 11-speed chains. Specification: Material: Stainless steel. Color: silver. Quantity: 3 pairs. Link model: CL555 Left size: 20 x 5.5 x 7 mm. Package includes: 3 pairs of speed links (6 pieces). Please note: Before ordering this bicycle chain link, please check the width and model of the bicycle gear chain.