Heavy Duty Chain and Padlock: Our security chain makes it difficult for one to cut through it with bolt cutters and other tools. The strength of this chain paired with a robust padlock enhances and adds maximum protection to your bikeInnovative Design with 4 Keys: Our bike chain and padlock set is known for their high-impact strength and has 4 keys to ensure extra spares. The chain is covered by a thick black sleeve which protects the links from possible scratchesSturdy & Durable Construction: The bike lock is hard to break through as the chain links are made of triple heat-treated boron manganese for ultimate strength. The narrow inner width of individual links defends against leverage attacksWide Application: This cycle lock has a wide application that makes it ideal for motorcycles, gates, bicycles, fences, grills, boxes, ladders, etc. Use it freely to protect your valuable objects and enjoy your beautiful day without worryA Perfect Gift Idea: The heavy duty bike lock and chain can be used for both outdoor bikes and bicycles. It makes a thoughtful gift idea for a birthday, Father's Day, or any occasion for someone who loves riding bicycles and keeping them secure