National Hardware 3" Zinc Steel Door Barrel Bolt is a versatile security solution designed for use on lightweight doors, chests, cabinets, and more. This bolt can be installed on either right or left hand applications, providing flexible installation options. When used vertically, the notch-in case securely holds the bolt in a locked position for added safety. Crafted from durable steel with a brass bolt and knob, it ensures long-lasting performance. The bolt diameter measures .32 inches, making it suitable for a variety of security needs. Model Number: N151-555