Well-designed open bar bracket: Provides excellent security for house doors, windows, barns, garden sheds, etc. Barricade brackets: Suitable for 2x4 lumber. An easy and economical way to stop intruders and burglars. Sturdy security brackets: Made of durable, high-strength 0.3cm thick steel, super strong and robust, long service life. The rust-resistant black powder coating provides rust protection. Wide application: Perfect for securing garage doors, front doors, cellar doors, barn doors, castle entrances, chicken coop doors, garden gates, sheds, warehouses, fences, bars, etc. Easy installation: Security door lock bracket includes 2 door brackets and 6 screws.