and high quality Features: Steel Material: This bicycle chain is made of steel, carefully processed for strength and durability, with rust-resistant properties. High Tensile Strength: Designed with high tensile strength, suitable for temporary replacement or repair of bicycle chains. Quick Release: Features a quick-release design for easy installation and removal without tools. 5 Speed Compatibility: Each package includes 5 pairs of chain links, compatible with 8, 9, 10, 11, and 12-speed systems. Safe and Convenient: Smooth edges prevent damage to the chain, ensuring smooth operation. 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