This is a pair of 1.9 Axial Krawler Rock Crawling Tires. FEATURES Fits most 1.9" wheels Trail/Comp sticky R35 compound INCLUDES Two 1.9 Axial Krawler Rock Crawling Tires with Foam Inserts REQUIREMENTS 1.9" rock crawler wheels Tire glue (if not using beadlock wheels) SPECIFICATIONS Width: 1.5" (39mm) Outer Diameter: 4.75" (121mm) Inner Diameter: 1.9" (48.2mm)