Misc Scorpion Neck Knife. Scorpion Neck Knife. Cast metal scorpion on beaded metal neck chain. Scorpion tail doubles as a knife handle. Detachable knife is 2 overall with 1 1/8" blade. Made in China." Cast metal scorpion on beaded metal neck chain. Scorpion tail doubles as a knife handle. Detachable knife is 2" overall with 1 1/8" blade. Mfr Part Number: FM-440.