Punisher Brass Knuckles sized for one that wears a US Large glove. Can scale as needed. I've printed in PETG HF and ABS. I posted profile with PETG on an A1 since it's more common.

I used Bambu Studio to layer the colors to make print faster and I like the layered line look.

I used smooth plates so there isn't a texture left on the bottom of the print. I added supports for the finger holes on bottom because the few tests I did had some artifact stringing. Also, the default from the slicer is to use the white as support, but I found a line of white was hard to get out. So I forced it to use red so that single line can just be left.