Sportneer Bike Lock: 8mm Thick High Security Anti Theft Bike Chain Lock with 2 Keys- 3.2/4ft Long Heavy Duty Anti-Cut Bicycle Lock for Bike, Motorcycle, Bicycle, Door, Gate, Fence, Grill

0.32inch-Diameter Ultra-Thick Chain: The thicker the bike lock chain, the more secure your property, which is why this heavy duty bike lock measures 8mm/0.32inches thick. Made of premium manganese steel, it’s cut and shear resistant to prevent bike theft.
Waterproof & Dirt-proof Cap: A dirty keyhole makes it difficult to open your lock, so to keep it dry and safe, we include a water and dust-proof cap for dirt and rust prevention. To make it easier to lock onto any object, the bicycle lock head is rotatable 360°. No more wasted time when you’re trying to lock your bike! (Note: For longer service life, please add anti-rust solution into the keyhole on a regular basis.)
Wear-resistant Protective Cover: Keep the bike chain for lock with keys in good condition as well as your bike thanks to the non-woven fabric, which resists corrosion and abrasion and prevents scratches and chips of your bike frame.
Sturdy Copper Keys: For the best strength and bend resistance, the keys of the heavy duty bike chain lock are made from pure premium copper, and won’t damage the lock cylinder. Comes with 2 keys so you can keep one at home for backup. You can even copy the key to have another one on hand as needed.
Locks More Than Bikes: It’s not just a bike lock, it can lock all sorts of things! Secure your gates, doors, scooters, motorcycles, generators and even sports equipment!