This is an optional RC4WD Axial SCX24 Chevy C10 Inner Fender Set, made of 3D printed nylon material and a great way to add scale detail.
Specifications:
Length: 7.22in / 183.6mm
Width: 0.91in / 23.3mm
Height: 1.10in / 28.0mm
Total Weight: 0.47oz / 13.5g