Just used this set for the first time, I've had it for about a year now. And slightly clogged the bolt hole on my 35 inch tire. I noticed that the set screws holding the handle to the tool loosened after the first use. I ended up tightening them up so they wouldn't get lost again and possibly lose some of the tooling in the tire. This kit is great value for money. I don't think I'll be using head valve caps haha.