Austyle Panic Bolt 55026 Panic Bolt allows for both doors to be locked closed and permits emergency exit from both doors (e.g. where emergency or panic situation could occur). Panic Bolt Function - a safety device for critical emergency. These are designed specially for doors that may be used in the event of an emergency that would require a fast and unencumbered escape, such as a fire evacuation. Features: Reinforced Solid Brass Saddle For Additional Strength Heavy Duty Applications Specifications: Material: Solid Brass Size: 300mm Projection: 25mm Fixing: Concealed Fix Finish: Black