I modelled this after watching the linked tested video. 

There are 4 versions. Big/Little with/without holes. 

The big ones really make a satisfying sound when moving them about. For the holed versions i suggest pop rivets, and only really needed if you need to move these around a bit (maybe for cosplay outfit or something). 

Leaving it open for remixes as i guess people may need various fittings on either end. 

Printed at .28 layer height in petg without supports and 10% infill, and they seem great.