It went smoothly, bled the brakes, and now they stop much better. That was the best $1.39 I've ever spent on my car. Before I couldn't even lock up the brakes, now it stops better than most other cars (still not that impressive). It was just a 5/8" 18 5/8" plug. Worked great, took literally 5 minutes to do then another 30 to gravity bleed the brakes. I reccomend it for anyone that hasn't yet.