1. EXQUISITE WORKMANSHIP: Bicycle chain adopts professional production technology, each joint of the chain is carefully processed, the chain and gear are tightly engaged, and it is not easy to fall off. Compared to regular chains, our chains allow for faster and smoother shifting adjustments. 2. WIDE RANGE OF APPLICATIONS: Our chains are suitable for most 9-speed/27-speed mountain bikes, dirt bikes and road bikes. Different chains correspond to different gears and bicycle sprockets. Before buying, please confirm whether our chain is suitable for your bicycle, so as not to cause unnecessary trouble. 3. DURABLE MATERIAL: The universal bicycle shifting chain is made of high-quality steel, which has excellent toughness and wear resistance, can withstand the wear of daily use, is not easy to rust or break, has a long life, and avoids frequent replacement. 4. SIMPLE INSTALLATION: The durable bicycle chain installation is very simple, no complicated steps are required, even if you are not a professional installer, it can be installed in a short time, you can use it to directly replace the old or damaged chain, saving Save time and effort.