Heavy Duty Motorcycle & Bike Chain Lock, 3M/10FT 10mm Cut Resistant Security with 16mm U-Lock 3 Keys, Anti-Theft Lock for Generators, Gates, High Value Bicycles【12mm*1.83m】

12MM Cut-Resistant Manganese Steel Chain: Hardened six-sided hexagonal manganese steel links with HV 830 hardness withstand tension, shear force and tool cutting. The anti-rust and anti-corrosion coating works well outdoors in rainy, salty fog and other harsh weather Premium Anti-Theft U-Lock: Equipped with a solid lock head and pure copper lock cylinder to boost anti-theft performance and long-lasting durability Adjustable 2-Inch O-Ring: Supports convenient length adjustment to meet diverse locking needs and multiple usage scenarios Waterproof & Scratch-Proof Nylon Sheath: Prevents scratches on vehicles and equipment, and strengthens wear resistance to extend service life Heavy-Duty Welded Hexagonal Structure: Harder than ordinary alloy chains, it stands against violent damage from hand tools for securing motorcycles, scooters, gates, and toolboxes Complete Security Package: Comes with 3 spare keys for added convenience and ensures you always have backup access to your secured items Versatile Length Options: Available in 1.83M/6FT length providing ample reach to secure various items including motorcycles, bikes, generators, and gates in different configurations