Features:Zinc alloy lock:The bike lock features a U-shaped design, thick PVC protective layer and high-quality zinc alloy construction to ensure long-lasting dust protection.Hardened handle:Bike safety locks are crafted with a harde ned material and vinyl coating to protect your bike's paint. This lock is designed to withstand cutting and sawing, providing strong protection for your belongings.Easy to use:Our anti-theft car locks can be easily opened and closed with a key. Included mounting bracket makes it easy to mount this lock on a motorcycle or bike seat tube.U-lock:Heavy-duty bike locks automatically lock when the key is removed, ensuring durability. The protective lock core can extend the use of the lock core.Plum lock core:The lock core adopts the plum lock core, which is more secure. Make your car safer.Wide range of applications:Our anti-theft bike locks are versatile and come with 2 keys. This lock provides worry-free security for bicycles, bicycles, scooters, doors or gates.Material: Zinc alloyType: Bicycle u/d lockSize :13 x 18.5 cmLocking mechanism: keyFeatures: Heavy dutyHow to use:Position the gasket pad where you intend to install the lock bracket.Attach the frame to the seat tube.Using the tools provided, tighten the screws to secure the bracket into place.Make necessary adjustments to the position of the support.Attach the lock to the bracket.Turn the lock toward the shrapnel opening so that it is properly aligned.Includes:1x U-shaped lock2 x key