The rear tires on my mower had a lot of tread but were not holding air due to dry rot. Instead of spending $90 for 2 tires I put these tubes in my old tires and they have held air perfectly for days. I was able to install them without any special tools. Break off the inside and outside bead, then use a large flathead screwdriver to pry the outside bead over the rim. Remove the tubeless valve stem. Insert a tube into the tire and pull the valve through the hole (I screwed on a cheap valve stem tool to keep the valve from slipping out of the hole). Kneel on each side of the tire and use a large screwdriver (carefully) to pry the tire bead back onto the rim. Add air and you're done. The tools used consisted of a large screwdriver, a small pry bar, and a piece of tubing that fit into the center hole of the rim.