Sterling Rope’s innovative escape device gives firefighters an advanced, yet simple tool for emergency egress. The F4's sleek, lightweight design (6 oz) is certified with Sterling's escape ropes, such as the FireTech. It is engineered to allow easy horizontal movement. The auto-locking feature adds security and confidence for a hands-free exit of a structure. The F4 can be used by all sizes of firefighters. The low profile shape packs easily in many bag styles and is available with multiple anchor options. Available in Red, Black NOTICE:The F4 escape device is only certified with approved Sterling escape ropes. Use of any other rope voids warranty and liability. Qualified training is required. Approved ropes: Sterling FireTech, EscapeTech, T-Safe, 8mm PER, SafeTech