100% and high quality Features: Steel Material: This bicycle chain is made of steel, carefully processed for strength and durability, and designed to resist rust. High Tensile Strength: This bicycle chain link offers high tensile strength, suitable for temporary replacement or repair of bicycle chains. Quick Release: The bike chain joint features a quick release design, allowing easy disassembly and installation without tools. 5 Speeds Compatibility: This bicycle chain set includes 5 pairs per package, compatible with 8, 9, 10, 11, and 12-speed systems. Safe and Convenient: Smooth edges help protect the bicycle chain and ensure 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 differences in monitor displays, the image may not reflect the actual color of the item. Package Includes: 5 Pairs of Bicycle Chain Master Links