【One Chain for All｜100% Compatibility On All Leading Derailleur Systems 】 【Asymmetrical Chamfering Avoids Interference】 【Added Chamfering for Smooth Operation】 【Impeccable Precision｜Phenomenal Shifting Performance】 【Worry-Free Component ｜Low Maintenance】 【EcoProteQ Weatherproof Chain｜Ultimate Protection】 【Outstanding Anti-Rust Defense｜Surpasses 650 hours Salt Spray Test】 【Authenticated Eco-friendly Production｜Awarded Internationally & Industry Renowned】 Quick response and higher efficiency