Here are the tools I used to remove the old plugs, prep and install the new plugs. You see the plug socket, there are two common sizes in this case we are using the larger of the two, 13/16". Next you see two types of plug gapping tools, I prefer the wire type. The needle nose pliers were to center the ground electrode over the center electrode, several of the new plugs had them shifted to one side. Probably turd polishing but it doesn't hurt. The ratchet, extension and socket are obvious. Up top we see anti seize and a toothbrush to put it on the plug threads.