Premium Material: The gate lock is made of solid stainless steel and zinc alloy which is strong and sturdy weighs 326g providing reliable security. Its chrome finish plating provides heavy resistance against corrosion making it the perfect locking solution for indoor and outdoor environments. Keyless Security: This Combination Locking Bolt provides convenient keyless security with 10000 possible combinations so there is no need to hassle with keys. (Tips: Mechanical password lock if you forget the password there is no way to crack it so please remember the password!!) Easy Installation: Easy installation of this bolt latch ensures the safety of your home. A new generation combination latch design with additional hole plugs on the sliding area. Tamper Protection: Comes with stainless steel screws which are one-way screws used for products with security requirements and can only be locked in one direction.