BullDog Series U-Lock - 4.5 x 9, Keyed, Black/Yellow, Includes bracket

The OnGuard BullDog series u-locks are a top choice for security. They come with X2P Double Bolt lock mechanisms and sturdy 13mm (0.51”) hardened steel shackles, offering full - circle protection. This Bulldog u - lock includes a free 1 - year anti - theft guarantee. It has an impressive 4.6 tons of pull strength and resists drilling and picking. The hardened ultra - steel shackle has a reinforced sleeve over the crossbar and cylinder, adding extra security. Here are the specs: length is 9 inches, diameter is 13 mm, no cable is included, shackle width is 4.5 inches, it's keyed, and the advertised weight is 2.85 lbs.

Using your OnGuard BullDog series u - lock is easy. First, find a secure object like a bike rack. Insert the shackle through your bike's frame and the object, then lock it using the key. Remember to keep the key in a safe place. When it comes to maintenance, regularly clean the lock with a dry cloth to remove dirt and debris. Avoid exposing the lock to extreme temperatures or harsh chemicals as this may damage the lock mechanism. If you have any issues with theft, don't forget that you have a 1 - year anti - theft guarantee.