Since the Skane Thor's Hammer is a bit wider it does not fit properly on our circular pendant rings, therefore the Skane Thor's Hammer cannot be used with any of the bigger chains. The only set that it can be used with is the Asgard Wolf Chain, Set 4, Silver. If you do not wish to buy the whole set, the pendant with the triangular ring is available; Skane Thor's Hammer, XL, Silver. The rings are not available to buy separately without the pendant.
You may also look if any jewelry or craft store in your area has something that is wider or triangular/flat at the bottom.