Ratchets are tools used to tighten or loosen bolts or nuts. They consist of a handle and a mechanism that allows rotary motion to be converted into linear motion.

Nuts are metric or imperial sockets that are placed on the ratchet to grip and tighten or loosen bolts or nuts. They are available in a variety of sizes to accommodate different bolt sizes.

Using ratchets and nuts makes tightening or loosening bolts and nuts more efficient and easier. They are an indispensable tool in many crafts and repair jobs.