Evolution Series U-Lock - 4 x 11.5, Keyed, Black, Includes bracket

This high - security lock is crafted from hardened steel. It features a secure disc - style cylinder that defends against picking and drilling. The short crossbar and shackle form a compact fit for better security. The hardened double deadbolt design adds extra protection from twist attacks. Its 14mm hardened MAX - Performance steel shackle can resist bolt cutters and leverage attacks. The disc cylinder has an anti - float feature to keep discs stable during transit. It comes with three stainless steel keys: two standard 'I' keys and one LED lighted key. Specs: - Length: 11.5 ins - Diameter: 14 mm - Cable Included: No - Shackle Width: 4.0 ins - Lock Style: Keyed - Advertised Weight: 4.1 lbs

Using your Evolution Series U - Lock is easy. First, find a secure object like a bike rack to loop the shackle through. Then, insert the key into the lock and turn it to secure or unlock. When traveling, remember that the anti - float feature in the disc cylinder helps keep the discs stable. But still, try to handle the lock gently to avoid any potential damage. To maintain your lock, keep it dry as moisture can cause rust. You can clean it occasionally with a dry cloth. If you notice the lock is getting a bit stiff, you can use a small amount of graphite powder to lubricate it. Always keep your keys in a safe place, and if you lose the LED lighted key, the standard 'I' keys will still work fine.