When it came time to serve my brake pads and change them, I am going to bike maintenance shop and ... Surprise 60 to purge all (30 per brake) then neck I nearly have a stroke, total lincompréhension. I returned home I buy this kit and even platelets less than 40, then I made a video tutorial on youtube, and here I did everything myself all in 20 minutes and with pleasure and the desire to do well. The kit is the Avid so we just do not fit more for Avid brake I think the pro kit contains absolutely everything that you need the same DOT 5.1 fluid and the amount is more than enough to serve at least 3 times before and brakes back.