This is a pair of 1.9" Flat Iron XL Tires. The 1.9" Flat Iron is BACK in Extra Large form to suit your scale rig! The hugely popular 1.9" Super Swamper XL paved the way for larger 1.9" scale tires and the new 1.9" Flat Iron XL follows the "bigger is better" mantra. The beloved Flat Iron tread pattern combines scale realism and all out rock climbing performance that you have come to expect from Pro-Line tires. The large lug pattern combined with siping allows the tire to have the perfect amount of flex under throttle acceleration. In fact, in our testing, the Flat Iron's response to throttle acceleration was unmatched. The Flat Iron tire is made to climb up anything that you challenge it with.