This is a zipper pull bead meant to be printed in steel, and tied on to a zipper pull using paracord. I made it for my motorcycle jacket's pockets. The heft of the steel makes the zipper pull easy to locate and grip when wearing thick gloves. It can similarly serve as a keychain.
The motif of it is very gearhead, mechanical, technical. It is meant to contrast against skull motifs, which is a common accent among riders.