Features: brand new and high quality Steel Material: This bicycle chain was made of steel material, it has been carefully processed and processed, not only strong and durable but also prevent rust. High Tensile Strength: This bicycle chain link has a high tensile strength, it is suitable for temporary replacement or repair of bicycle chains. Quick Release: This bike chain joint uses a quick release design, allowing you to easily disassemble and install without tools. 5 Speeds Types: This bicycle chain set has 5 pairs per package, it has 5 speeds types for you to choose, which are 8, 9, 10, 11, 12 speed. Safe and Convenient: The smooth edges of this bicycle chain will not damage the bicycle chain, ensuring the smooth rotation of the chain. Specifications: Material: Steel Color: Gold Type Options: 678/9/10/11/12S Package Weight: approx.15g Size: As The Picture Shows Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 5 Pair of Bicycle Chain Master Link