Evolution Series U-Lock - 2.75 x 5.9, Keyed, Black

This high - security lock is made of hardened steel. It features a secure disc - style cylinder that resists picking and drilling. The short crossbar and shackle form a compact design for better protection. The hardened double deadbolt design guards against twist attacks. Weighing only 747 grams, it's lightweight. The 11mm hardened MAX - Performance steel shackle offers great strength. With DuoCore hybrid cylinder technology, it further enhances security. Specs: 6 inches in length, 11 mm in diameter, no cable included, 2.75 inches shackle width, keyed lock style, and an advertised weight of 1.65 lbs.

Using this U - lock is easy. First, find a solid object like a bike rack to loop the shackle through. Then insert the key and turn it to lock or unlock. Make sure the lock is firmly attached to the object for maximum security. When not in use, keep it in a dry place to prevent rust. Avoid exposing it to extreme temperatures as it may affect the lock's performance. If the lock becomes dirty, you can clean it with a soft cloth. Regularly check the keyhole for any debris and clear it gently with a small brush if needed.