In nautical-speak, a loose cannon is any reckless individual whose behaviour endangers the crew of your ship. The name comes from the fact that if a several-thousand-pound cannon is not properly secured, it will instantly crush anything and anyone in its path, possibly even smashing a hole in the hull and sending you to a watery grave.
Available in Sterling Silver and Stainless Steel.
There may be small differences between the pictured sterling silver piece and its stainless steel counterpart. The steel pieces may have slightly less detail than the handcrafted silver version.