Roller Coaster Wheel Assembly

I designed this wheel assembly for a dive coaster I have been working on. I will also publish track parts. You will need various M4 and M3 screws of varying length. I printed these in PLA filament with a 3 loop wall. As long as the walls of the print are thick enough, infill will not matter. You can get screws through makerworld, and it will support me. If you don't want to do that, use the following kit on amazon.(https://www.amazon.com/dp/B0C854KL4N?ref_=cm_sw_r_cp_ud_dp_SM8EQDNQRW9KZYJYP1