The tool to insert the ^ arrow is really too big. I used it and I had to borrow the tool from a friend as not to introduce it despite the very good grip. And my friend's tool, a little thinner and with a screwdriver handle vulgar allowed me to introduce the wick into my tire. So I'm disappointed because imposible to use on the road. I will have to buy a tool. For me it is a purchase for missed introductory tool anyway
