50 cal. style amp knob replacements!  Put some BOOM in your BOOMBOX builds!  Why?  Why not!  Seriously I wanted a style that fit the theme of my builds, and I am sure it will look great in your DIY speaker builds when using the ZK series amplifiers (or others with 6mm shafts) in ammo cases and Apache style cases.

Letters T,B,V on the primer caps and letters on the rim will likely print in better detail if using a .2mm nozzle, but they also are semi legible when using a .4mm nozzle (see pics).  Bed adhesion is key to the success of printing, but should you have an issue use bed adhesive.