A spark plug socket is the main tool, made to be operated with a hand ratchet. These have a rubber insert to hold the spark plug in the tool, which protects the ceramic body and prevents the spark plug from being dropped. Most engines use a long spark plug tube where the part is installed, so most spark plug sockets are very long, as compared to standard sockets. A variety of common hand tools might also be necessary on some engines where other parts need to be moved out of the way.