Trick Bolt #3 Puzzle

It looks like an ordinary metal bolt, but Trick Bolt #3 hides a clever secret. The challenge is to figure out how to remove the ring from the bolt by discovering its concealed mechanism. Compact and hands on, it is a satisfying mechanical brain teaser that rewards curiosity, patience and a little experimentation. This version was designed by Vivienne and released in 2019. 

Object: Remove the ring from the bolt
Difficulty: 6/10, Tricky
Designer: Vivienne
Dimensions: 3.3 × 3.3 × 7.2 cm
Packaging: Cardboard display box
Brand: Puzzle Maste