Tamiya Truck 1/14 Semi Tractor twin double Axle Dolly Pin Coupler frame  4

3 parts in total 3d printed kit printed  chassis 3d 

bumper

coupler arm.

 3d printed in black or white sent at random  Engineering  Grade material the best of filaments

Build your own 5th Wheel 2 Axle Dolly using the stock tamiya suspension and wheels etc .

You will require parts to finish

suspension /axles /wheels and tyres etc

no fixings are included it will require assembly and may require a little trimming to fit you can use Tamiya suspension axels etc if you have them to hand