I used low gloss because my 8 year old wiper arms looked like ****. Make sure that you tape off the underside with the spring and the hole where the wiper arm sits into the round motor deal. It is probably not necessary but I figured if the spring and inside the hole got painted they may not work right or just chip off all over the place. If you like shiny, gloss black .. if you like simple and clean, low gloss. Make sure you sand them good first or it will make this orange peel looking crap .. Also, do 2-3 light coats, not 1 thick coat.