Du-Bro Large Scale Treaded Inflatable Wheel 3.75" Part No: 375TV. 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: 3.75" \(95 mm\), Axle Diameter: 3/16" \(5 mm\), Weight: 117grams/wheel, Width:1.160" \(29.4 mm\)