This is a complete 3D printed skateboard truck inluding all the parts except rod that you have to buy (8mm rod, you can buy a meter of it for about 50 cents and then cut it). All three bushings have to be printed with flex filament, TPUm ninjaflex or something similar. I printed that with PLA and it works fine but I broke it, you can see that in the video below. If you can print that with ABS, PETG or nylon, that may be a good idea :)