PRO902001 Knuckles 2.0 M2 Off-Road Tires by Pro Line Fits 1/8 scale front or rear buggy wheels and constructed of soft and durable M2 rubber compound. Increased lug spacing provides for greater traction and reduced overall diameter for quick response and lower center of gravity. Includes two Proline 1/8 scale Knuckles Buggy Tires with two firm foam inserts Width: 1.6in (41mm) Inner Diameter: 3.2in (81mm) Outer Diameter: 4.4in (111mm)