This 100 cm plug-in chain is perfectly suited for various Trelock locks, including models 350, 450, and 455, and the Trelock Protect-o-Connect system. It offers added security and convenience when securing your bike. With this plug-in chain, you can securely attach your bike to a post, fence, or other fixed object. It's a reliable and durable choice for your bike security. Product specifications - Suitable for Trelock 350, 450, and 455 locks - Suitable for Trelock Protect-o-Connect systems - Length: 100 cm