This is a working combination padlock design that can be used in place of a standard Master Lock on a locker or whatever. It's relatively strong, but ...it is plastic it's, so not for high security.
Configurable combination: pick from 6 digits across 3 tumblers for 216 possible combinations
Similar dimensions to classic rotary Master Lock for compatibility with most lockers and other latches
Strong lock body and shackle with catch resists forcing open
Detent feature on tumblers for precise positioning and tactile feedback
Optional glue-on cap to prevent accidental disassembly