The Interco Super Swamper IROK ND radial was designed with the serious off-roader in mind. Virtually the same tire as the IROK radial, Interco added a twist by making the IROK ND outside lugs non-directional. Designed for mud, hardpack, and the loose stuff, as well as the rocks, the scooped Three Stage Lugs, molded siping, extra tough cords, and special construction sidewall features make the Interco Super Swamper IROK ND an excellent all-around off-road tire. The radial construction gives the IROK radial better street manners and longer tread life.