VITTORIA AIR-LINER LIGHT GRAVEL 700x42-50Designed specifically for gravel tubeless tires, with tire widths ranging from 42 50mm, this innovative insert revolutionizes the wheel tire system for gravel applications Increases lateral stability and cornering support while also helping protect the rim from impacts and greatly reduces the risk of snake bite style punctures Run flat foam expansion in the case of a puncture helps to reduce the chance of crashes allowing a safe stop Increases