This is the HO Scale Old Windmill Built-&-Ready Structure from Woodland Scenics

5mm micro servo

Genuine Traxxas replacement part #9473X

Fits: Traxxas TRX-6 Mercedes-Benz G 63 6x6 (clipless)

Traxxas 8671A Wheels 3.8 Orange Splined 2.2 Wheels This is the HO Scale3. 8" wheels in orange with a 17mm splined hex. Two per package. Splined wheels engage the hub over a broad interface rather than a single pin, which spreads drive load and resists the rounding that eventually makes a wheel spin on its hub. Wheels are worth replacing rather than running once cracked, since a failure at speed usually takes the tire and hub with it. Fits: Traxxas Sledge (95096 4) and other models using 17mm splined hubs. Wheels only