Feature: Made of strong Iron material. High strength and hardness. Easy to install and use. Durable in use. Used for double fan fire doors of hotels, families, factories. Specification: Brand new Material: Iron Size: as shown in picture Package included: 1 x Tube Well Lock, 3 x Lock Buckle, 1 x Key. Note: Please allow 1-5mm errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated.