Apologies to any Norse deities for the terrible pun....
This started off as a design for a keychain accessory to let you hang 3 separate split rings from one point while keeping them slightly seperated for ease of identifying which split ring is which instead of just ending up with a big bunch of keys.
As I was designing it, I realised that it was bearing a vague resemblance to the outline of a traditional Mjölnir pendant so I decided to deliberately make it even more-so, and in doing so the running together of "Mjölnir" and "Gear" happened and so "Mjöl-gear" was born.
The vertical slot in the front is sized for a 3mm x 22.5mm tritium cell.