I use this every blue moon. But it is necessary to install new valve stems in my garden equipment tires. I've read reviews and it looks like it has an issue with the head retention pin failing over time. So I took a chisel and made cuts on each side. Problem solved. If you have a tire shop, you'll have to spend a few more dollars per user. Just put in 4 fresh sticks today and without them it would be a day of fun breaking rubber and threads with pliers. A must have for anyone doing it themselves out there.