These wheels are designed for use on 1:64 diecast models. Design 19 is a 6 spoke, 20-21 are twist wheels with turbine type spokes, and 22 is a deep dish version of the Hotwheels Ultra Hot wheels.
Tires and other diecast wheels can be found in my collection here:
https://www.thingiverse.com/Goodsons_Hobbies/collections/164-hotwheels-diecast-accessories
Wheels 20 and 21 print both CW and CCW rotations, 2 wheels per file.
Print with a <.5mm nozzle and .1mm layer resolution for best results. The tires print separately, with about .1mm clearance inside the diameter so the wheels press in easily, and will hold with a drop of glue (or friction depending on print settings and quality). I chose to paint the lips of the wheels silver, and it really finishes them nicely.
I love to see your makes, post here or tag me on instagramfind me on instagram @goodsons_hobbies