The Master Lock 630EURD has the following specifications: 30mm aluminium padlock with brass finish - 23mm chrome plated steel shackle, 5mm diameter - 3-digit resettable combination The Master Lock Brass Finish Combination Padlocks are a tough and dependable security solution. With a modern design and a solid aluminium body with a steel shackle. They are an appealing solution for day-to-day reliability. 3-digit or 4-digit resettable combination options (offering up to 10,000 possible combinations) are available. No reset key is needed to change the combination. All Master Lock padlocks are supplied with a Lifetime Warranty against mechanical failure. Suggested uses: toolboxes, suitcases and bags.