100% brand new and high quality Features: Steel Material: This bicycle chain was made of steel material, it has been carefully processed, not only strong and durable but also helps prevent rust. High Tensile Strength: This bicycle chain link has 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 includes 5 pairs per package, it offers 5 speed types for you to choose from, including 8, 9, 10, 11, and 12 speed. Safe and Convenient: The smooth edges of this bicycle chain will not damage the chain, ensuring smooth rotation. Specifications: Material: Steel Color: Gold Type Options: 678/9/10/11/12S Package Weight: approx. 15g Size: As shown in the picture Note: Please allow 1-3mm error due to manual measurement. Due to monitor differences, the picture may not reflect the actual color of the item. Package Includes: 5 Pair of Bicycle Chain Master Link