Similar to the Duo-Grip style but with addition of a Ladder cross chain between each Duo Grip cross chain. This style provides more consistent traction by filling the gap between the Duo Grip cross chains. The Duo-Ladder is the ultimate traction chain for deep lug treads. V-bar are great on hills, ice and hard packed conditions. The v-bars are also known as a wear bars, since they significantly extend the life of the chains. They are not recommended on pavement since they can damage the surface if the tires begin to spin. “Recommended for Off-Road Use Only"