I was a little hesitant at first, i for one have a shop and a big air compressor, so i didn’t think this kit was really for a guy like me and more for someone who is unable to spray. Well i was completely sold on it after i tried it, the rollers are very fine and don’t leave a track mark like you do when you use house paint (this was my biggest fear with A roll on kit) i have since used this roll on primer on 5 different vehicles! I am a big fan of it, especially the high build urethane primer. It can go on very thick if you do a couple coats and it sands GREAT. Also a little goes a long way, i got 2 full car primes and 3 cars half primed out of one gallon. 10/10 from me.