Bear Head King's Chain
The metal chain itself is strong, durable, and doesn't seem like it will tangle. That is excellent news, as my last chain was snarled to the point of replacement. The bears' heads that hold Mjolnir are too elongated. That was one of the reasons I was going to send it back, initially. They resemble rats too closely, instead of bears. I would shorten them by a centimeter or so to give a more realistic and ursine shape. Also, yours is the only bear shaped mjolnir king's chain necklace I have found, so it would seem that you've cornered that market. Well done.