National Hardware 4" Black Steel Door Barrel Bolt is designed to provide reliable security for lightweight doors, chests, cabinets, and more. This versatile bolt can be installed on either right or left-hand doors, ing flexibility to suit your needs. When used vertically, the notch-in case securely holds the bolt in a locked position, enhancing safety. Crafted from durable steel with a brass bolt and knob, this barrel bolt features a .32-inch diameter for sturdy performance and long-lasting use. Model Number: N151-621