Robust Security: Crafted with 14mm high-performance steel, this U-lock offers cut, lever, and shear resistance, ensuring your valuables are safe from theft Adjustable Size: The main lock's beam can extend up to 350mm and retract to 250mm, accommodating various locking needs for both indoor and outdoor use Weather-Resistant Design: The black powder coating protects the lock from rust and corrosion caused by rain, snow, or sun, ensuring long-lasting durability Versatile Locking: The adjustable shackle allows locking to a wide range of structures, including utility poles, shelves, fences, or any fixed structure up to 50mm in diameter Convenient Key System: Comes with 5 keys, featuring a long padlock with a keylock to prevent key loss and ensure easy access to your lock