These are Mounts and printable "lexan" wings for the Kyosho Mini-z 1/28 scale cars. the Lexan Wing Mount is kind of generic, the Sauber wing mounts are specific to the Mercedes Sauber LM cars.
I've created wings for the Audi R8 LMS and the Mercedes Sauber which have shape and holes specific for those cars. The Generic Wing is same size as Audi wing but no holes.
You can also cut out actual Lexan for the Wings which is what I originally started doing but then decided to just print some so i didn't have to cut anything out or paint.
I use the Audi wings on my Euro Truck (Golem and Marka) which i have mounting systems for, so feel free to check out my other designs for the Euro trucks systems.
I use small machine screws on the wing to mount, for the mount to the body i use a mini-z screw or slightly smaller if possible to keep from splitting the mount.
Feel Free to send me a tip if you like the design :-)
I recommend printing the Wings with a large nozzle like 0.8 or 1.0, but any nozzle will work just the smaller ones cause it to have more lines.
I used a Layer height of 0.1mm on my 0.8mm nozzle which turned out pretty good.
The mounts seem to work well anywhere from 0.1 to 0.2 layers on a 0.4 nozzle printer.