Du-Bro Large Scale Treaded Inflatable Wheel 6" Part No: 600TV. Du-Bro treaded wheels are narrower in width to fit inside wheel pants and retracts easier. Comes with 3/16" (5 mm) axle diameter and can be drilled out to 1/4 (6 mm) if desired. Comes complete with our positive seal air valves and inflator adapter. Diameter: 6.00" (152 mm), Axle Diameter: 3/16" (5 mm), Weight: 367grams/wheel, Width:1.900" (48.2 mm).