chain lock with good quality and low price Product: chain lock used for motorcycles , bicycles and electric-carsModel No.:5100Lock cylinder: brass cylinderChain: Φ6mm manganese steel, heat-treated, white zinc plated, rubber tube coveredLock body: zinc alloy, chromedDiameter of the chain: Φ6mmLength: 1000mmWeight: 1.0kgPackage: paper box, 20pcs/ctn bicycle locks