The innovative F4 from Sterling gives firefighters an advanced, yet simple to use tool for emergency egress. The F4’s sleek, lightweight design is compatible with Sterling’s 7.5 mm to 9 mm escape ropes. The auto-locking feature adds security and confidence for a hands free exit of the structure. Engineered to allow easy horizontal movement. The low profile shape will pack easily in many bag styles. Color: Red or Black. Made in USA.