The chain lock is a durable and dependable security accessory designed to provide optimal protection for your belongings. With a sturdy chain construction, it offers a robust barrier against theft, ensuring peace of mind for your valuable items. Its versatility allows you to secure bikes, gates, or other possessions with ease. Invest in the strength of a chain lock to safeguard your belongings effectively. The Chain Bike Lock features 8mm round chain links made of hardened steel, resist hand tools, bolt cutters, and leverage attacks. Along with a protective nylon cover with the resident of wear and tear. Chain length: Silver: 4.9" Black: 3.3" Compatibility: Compatible with all Jasion electric bike models.