Tattoo Machine Tools - Get the tools you need to tune your tattoo machine and keep it running smoothly here in our Tattoo Machine Tools section. Shop for spring flake adjusters, armature bar alignment tools, Allen keys to tighten the screws on your coil tattoo machine, and other tattoo machine tools. To learn how to use these tools to adjust different components of your tattoo machine, check our our Guide to Replacing Coil Tattoo Machine Parts.