That's a green plated variation of this talked component of the stylish 2-part wheel utilized on the Comical Grasshopper and Hornet! Pair all of them with the colored rim elements (T Parts) inside model, and/or separately available Hop-Up option and limited-edition component services and products, for a custom and unique look.
• WR-02CB S Parts (Green Plated) x1
• Use with WR-02CB T Parts (Wheel Rims) and ribbed (front part) or round block (backside) bubble tires.