The product is a 1987 Masters of the Universe Scareglow left arm from the vintage He-Man and the Masters of the Universe franchise by Mattel. Made of plastic, this original part is compatible with action figures and figurines from the same collection. The arm features adjustable positioning and a glow-in-the-dark effect, adding to the character's eerie appearance. This unique piece is a valuable addition for collectors of vintage Masters of the Universe toys.