High security: 4 digits. Easy to set your own custom number combination. More than 9999 kinds of combinations available, 10 times more secure than 3-digit combination padlocks. Many uses and more choices: the spring cable can be freely coiled or stretched into any shape to meet different needs, which can be used for more choices, ideal for luggage, luggage, helmet, bike, case, fence, toolbox, gate, etc. Durable material: the locking head is a cast metal body with alloy materials, so it has the functions of being waterproof, rustproof and anti-cutting, which is very strong and durable. Easy to use: convenient design and keyless, helmet locks have more advantages than other key lockers. You can use them separately or together. Size: approximate stretched length: 150cm Color: Black (due to the display, there may be a difference in color) Quantity: 1 piece