General description 4-digit security padlocks allow you to set your own code with 10,000 unique options, making them ten times more secure than a three-digit lock. The large numbers and side window design enhance readability, eliminating the need for tedious keys. Technical specifications Type: 4-digit combination padlock Material: High-strength zinc alloy housing Shackle: Hardened steel Weatherproof and rustproof Cut- and saw-resistant Usage Long neck combination locks are ideal for various indoor and outdoor applications, including: Door locks Garage doors Sheds Fences Containers Tool boxes Gym locker rooms College lockers School lockers Escape games Cloakrooms Cabinets