National Hardware's 6-in lockable security bolt in black is used for securely locking barn doors, gates and shed doors. Designed to be used with a padlock for additional protection. Black finish for style and durability. Mounting hardware included for easy installation. Can be padlocked for extra security. For exterior applications. Coated with Weatherguard Protection to withstand harsh weather conditions and prevent corrosion. National Hardware's Lifespan Limited Lifetime Warranty.