This product was easy to install. I used the 1910 in the front and the 1911 in the rear on my midsize L series Kubota tractor on my R4 industrial tires. I used them for the first time today since we got enough snow to try them out. They made a huge difference for traction. I obviously can not say how long they will last at this point since they were just put on and used only once. My hope is that they will not work themselves out of the treads or wear down too fast over time. I will give another report as time passes. So far, the only complaint I have is the cost is a bit excessive.