3D printed 1:25 semi frame rails, sold in pairs in two different lengths. This is FDM (Filament) Printed in Carbon Fiber Reinforced PETG material, it has excellent strength and durability. The smoothness is not as refined as resin, but it is not brittle and can be easily cut drilled or trimmed without fear of chipping, also you will be hard pressed to break it without using tools. Stated Length is for the C-Channel section not including the front tab. There may need to be some minor flash cleanup on the ends.