I got this for my 2019 MX-5 Miata RF. The doors would rattle when going over train tracks, etc. You do need a 10mm ratchet, and also a screwdriver. It is very easy to install, use ratchet to remove the screws (but keep them, they are used to attach the new bushings.) Then put the new bushings on, and use the screwdriver to reverse the screws before going clockwise, so you can be sure you have the threads aligned. Then use ratchet to get the screws closer to the bushings, just holding them snug, See full review