Material: Aluminum Alloy.
Hex Diameter:12mm / Thickness:12mm.
High quality materials and superb craftsmanship,sturdy and durable.
Suitable for Most of 1/10 RC Crawler Car .
4 x 12mm Thickness 12mm wheel hex drive adaptors with pins & screws
Aluminum 12mm Thickness 12mm Wheel Hex Drive Adaptors With Pins & Screws for Most of 1/10 RC Crawler Car Red - B0739WCVT6