Kryptonite Key Chain Bike Lock, 3 Feet Long, 8mm Chain Links, Bicycle Chain Lock with Keys for Scooter, Road and Mountain Bikes.

["HEAVY-DUTY CHAIN: 8mm hardened steel chain links resist hand tools, bolt cutters, and leverage attacks","PROTECTIVE FEATURES: Durable WEATHER-RESISTANT nylon sleeve prevents scratching and wear and tear on your bike.","The Kryptonite Extra Length Chain Bike Lock features 8mm round chain links made of hardened steel with a protective nylon cover. This key chain includes two stainless steel keys with an ergonomic design to reduce torque and keep them from bending or breaking.","Lifetime Warranty"]