Extendable key chain: five zip-coupling key rings, each key ring contains two split rings for a metal key fob with a quick-release function to secure keys and accessories. The total length of the quick-release pendant is 8 cm, and the key carabiner diameter is 2.5 cm. The set provides enough quantity to meet typical needs. High quality material: made of iron alloy. The removable, pull-out key fob resists breaking and deformation. The removable keyring has a polishing finish with smooth, burr-free edges to protect your hands. The double ring keyring is rust-proof, corrosion-resistant, extendable, robust and durable. Removable design: the removable key ring has a strong spring and can be easily removed and reattached by pressing. The metal key ring saves time and effort; once connected, the robust plug-in design prevents the keyring from accidentally loosening and the key from being lost. Easy to use: the quick-release key ring is easy to operate. The key can be quickly removed or locked by pressing the female push-button switch. A spring-loaded ball bearing clutch mechanism prevents accidental release, so you can access your keys without losing them. Use scenarios: ideal for organizing multiple keys and small accessories at the office or facility; suitable for managing car keys and fobs in a dealership or service shop; useful for outdoor activities or travel where secure, rapid access to keys is needed.