Recodable Keyless Security Our 4-wheel recodable combination lock bolt allows you to choose from 10,000 different combinations. Easily set and reset your combination without tools or keys. This keyless design eliminates the need for carrying multiple keys or replacing locks, offering convenient digital password access. Waterproof and Durable Zinc Alloy Material The lock body is constructed from zinc alloy with a rust-resistant coating, making it durable and weatherproof for year-round use. The dials and barrel bolts are chrome plated for added protection. Features include pick-resistant dials, a 10mm diameter solid steel slide bolt, and one-way security screws. 2 Installation Methods Lock sleeve installation: Use when the door frame and door are on the same plane, with metal sleeve and bolt setup. Side door installation: Use when the door frame and door meet at a 90-degree angle, utilizing the side door buckle and bolt method, requiring a hole in the door frame. Easy to Use To unlock, dial the correct combination and lift the handle to open. To lock, close the shackle, push the handle down, insert the pin, then scramble the dials to secure. After unlocking, always scramble the dials to prevent accidental relocking. Wide Application Measuring 4.76 x 1.81 x 1.57 inches, this compact combination lock is easy to install in tight spaces. Ideal for securing sheds, barns, cabinets, doors, gates, fences, and windows. Suitable for both indoor and outdoor use.