This is the Arrow dynamics puzzle from Puzzle Master's own range of wire disentanglements. I have almost the entire set now and I think this must be the last of the high level ones for me to try. It is a good price at $18 and is level 10 (Mind Boggling) at the top of their difficulty scale. It is clamshell packaged and the simple instructions are just to remove the arrow (inside it reminds you that no force or bending is necessary). It is made of beautifully anodised thick wire and is good and strong - dimensions are 35.6 x 10.2 x 2.5cm. No solution is provided but it can be obtained on request at this link.