Check your state laws on brass knuckles. In some states carrying one of these is considered illegal and against the law. Use your best judgment.
I have included a plain version as well as one that reads "Bitch, Betta Have My $$$$" Made it for my girlfriend. She loved it!
Printed it at high quality. Print your desired version twice or mix and match (one plain one with the text). Then glue the two pieces together.
brassknuckles_thingiverse_.stl | 828.1KB | |
brassknuckles_thingiverse_plain.stl | 505.6KB |