Easy to use: Quick bike chain link pieces are easy to install, remove, and reuse, their smooth edge would not damage the bike chain and are good for smooth chain rotation. At the same time, the connector and mtb chain have a high degree of coordination, ensuring stability and reliability.Compatible: Our missing link chain is compatible with all single/1 speed chains such as MTB, BMX, track bikes, various types of mini bikes, and fixie bikes as an emergency. Whether bicycle chains are common pitch or special specifications, suitable mountain bike chain connectors can be provided to meet user repair and replacement needs.30 Set Bike Chain Link: You will receive 20 set bicycle chain link connectors repair parts, sufficient quantity to meet your daily maintenance needs. Suitable for bicycle enthusiasts, professional maintenance personnel, and users who need to regularly maintain and replace bicycle chains.Quality Material: The missing links are made of durable manganese steel, fine edge master links with high-tech treatment, machine precision, robust, tough, will not easily get erosion and rust, and suitable for long-term use. Great to replace old ones on used chains.Suitable Size: The overall size of the single-speed bicycle chain link is 21 x 8.4 x 10mm/0.82 x 0.33 x 0.39in, ideal for bike chain link repair and connection. Please pay attention to the size of the chain link before ordering, only suitable for single-speed bicycles.