Du-Bro 400TV 4" Diameter Large Scale Treaded Wheel Our treaded wheels are narrower in width to fit inside wheel pants and retracts easier Comes with 3/16 axle diameter and can be drilled out to 1/4" if desired Comes complete with our positive seal air valves and inflator adapter Our treaded wheels are narrower in width to fit inside wheel pants and retracts easier Comes with 3/16" axle diameter and can be drilled out to 1/4" if desired Comes complete with our positive seal air valves and inflator adapter