Titanker Bike Chain Lock with Keys, 3.3 Feet Security Heavy Duty Anti-Theft Bicycle Chain Locks for Bike, Motorcycle, Bicycle, Door, Gate, Fence, Grill (6mm, 8mm, 10mm Thick Chain)

Secure & Portable: The key can only be pulled out after the bike chain lock is locked, which prevents the key from being lost. Titanker bike lock comes with 2 keys. You can take one of the keys to use in daily life, and you can leave another key at home in case you accidentally lose one. Heavy Duty & High Quality: With 8mm thicker security heavy-duty chain links, our bike lock is made of heavy-duty steel known for its cut-resistance. Lubricate the bike chain lock hole and keyhole regularly, this will prolong the lock's service time. Protective Cloth Sleeve & Dust Cover: Chain is enclosed in protective cloth sleeve, which effectively protects the bike lock chain from rusting and scratching. Safety Tips: Never leave your bike locked outside for long periods of time. Especially in high crime areas. No bicycle lock is 100% secure. Portable Safe Size: The overall length of the bicycle chain lock is about 3.3 feet. The links are about 1.97 inches long and about 0.32 inches inch thick. Lock Weight: 2.5 pounds