3D printed in silk bronze or silk gold PLA plastic. 
Comes as a set: Key + Circle Key Necklace is 3” across x .75” tall, stationary (doesnt spin) and hung on 25” stainless steel chain necklace. 
Circle Insert is 3.75" across x .3" tall and twists left/right by one tab. 
Comes with double stick tape on back half to hold it in place while front half can twist.
(see video)
There are magnets in the circle insert to hold the top half in place after twist.
Bronze circle insert has a scarab.
Gold circle insert has the eye of Horus.