KMC Z7-RB 7 speed chain

Compatible with 7 speed drivetrains High Pin Power with Reinforced Durability - Quieter Riding ExperienceZ Series features stronger pins and riveting to achieve higher pin power and upgraded durability while structural chamfering brings benefits of low noise and smooth pedaling. Anti-Drop Design - Wider, Thicker, SaferAnti-drop design combined with wider and thicker chain plates allows for a more stable and safer cycling experience. Rust Buster – Rust Shield Defense from the ElementsFor protecting city/trekking and public bikes which are exposed to the elements, RB offers protection against salt and moisture and improves chain durability. Patented RB Anti-Rust Coating Surpasses 500 Hour Salt Spray TestDurable anti-rust coating from a unique surface treatment that surpasses 500-hour Salt Spray Test.