Advance single-opening deadlock - STANDARD LOCKS & PADLOCKS - STD-101

Imagine a tiny, tough little robot that keeps things safe! That's what a padlock is like! It's a metal box with a strong metal arm called a shackle that goes through a loop or hole. The padlock has a secret code or key that only you know, so no one can open it unless they have the right key. Padlocks come in all shapes and sizes, from shiny brass ones to super-strong steel ones that are almost impossible to break. You can use them to lock up your bike, your backpack, or even your secret treasure chest! They're like little guardians, keeping your stuff safe and sound.