From the bike parts diagram over, I have labelled some of The key bicycle elements. If you can't come across what you're looking for, scroll down, as I go into extra detail under! Derailleur: an assembly of levers, usually cable actuated, that moves the chain amongst sprockets on the cassette https://bikeengineskits28261.blogpostie.com/56493509/the-ultimate-guide-to-bike-parts-diagram