BullDog Series U-Lock - 4.5 x 9, Combination Bike Lock

The OnGuard BullDog series u-locks are your top - notch choice for bike security. Equipped with X2P Double Bolt lock mechanisms and a sturdy 13mm (0.51”) hardened steel shackle, they offer full - fledged protection. You'll get a free 1 - year anti - theft guarantee, and this lock can withstand a 4.6 - ton pull, making it highly resistant to drilling and picking. The 13mm hardened ultra - steel shackle has a reinforced sleeve over the crossbar and cylinder, adding an extra security layer. Specifications include a 9 - inch length, 13mm diameter, no included cable, 4.5 - inch shackle width, combination lock style, and an advertised weight of 2.82 lbs.

Using your BullDog Series Combination U - Lock is easy. First, find a solid object like a bike rack to lock your bike to. Open the lock by entering the correct combination. Place the shackle around the bike frame and the fixed object, then close the lock. When setting your combination, make sure to choose a sequence that's easy for you to remember but hard for others to guess. Keep the lock clean by wiping it down regularly with a dry cloth. Avoid exposing it to extreme weather conditions as much as possible, as this could potentially damage the lock mechanism. If the lock gets wet, dry it thoroughly. If you have any issues with the combination or the lock doesn't seem to open, don't try to force it. Contact the manufacturer's customer service for assistance.