A bolt cutter is a tool that helps us cut things that are too thick or strong to cut with our hands. It has two long handles that are connected in the middle by a hinge. When we squeeze the two handles together, it makes the blades at the end of the handles come together and cut whatever is in between them.
Imagine having a big cookie that you want to share with your friends, but it's too hard to break it with your hands. You could use a bolt cutter that would easily cut the cookie into pieces that are easy to share. This is the same way a bolt cutter helps us cut through different things like chains, locks, and wires that are too thick to cut with our hands.
However, bolt cutters are not toys, and they can be dangerous if they are not used carefully. So, it's important to always ask an adult for help and to wear protective gear like gloves and goggles.