This solid brass padlock has internal standard security and is suitable for toolboxes, sports equipment, lockers, etc. It uses a key to lock and unlock and the keys are keyed alike with other padlocks in this suite. The padlock is made of solid brass with a 4.5mm hardened steel shackle, a 3-pin tumbler mechanism made from all rustproof components, automatic locking, Pracentric keyway, and 2 keys.