This is the Axial 2.2 Rocksters Rock Crawler Beadlock Wheels in Black.
Fits the most popular rock crawler tires and 12mm hex hubs Wheels constructed of super strong composite material gray aluminum ring True beadlock design no messy gluing required
Two Axial 2.2 Rocksters Rock Crawler Beadlock Wheels in Black
Rock crawler tires of modeler's choice
Width: 1.4' (36mm) Beadlock Diameter: 2.2' (55.5mm) Hex Size: 0.47' (12mm)