Durable Stainless Steel Bike Chain with Excellent Running Performance. Premium Stainless Steel: Made of 304 stainless steel for excellent anti-rust and anti-corrosion properties. Wide Compatibility: Fits single-speed and multi-speed bikes (6-12 speed) including mountain, road, and folding bikes. Customizable Trademark: Logo printing and packaging options available for customization. Durable Construction: Heat-treated and hardened for high tensile strength and wear resistance. 1-Year Warranty: Covers manufacturing defects for one year from the date of purchase. CE Certified: Product meets CE safety and quality standards. OEM and ODM Services: Full customization, minor customization, and flexible options available. Adjustable Design: Standard 116-link design easily adjusted to fit different frame sizes.