Special-shaped part with long service life

The utility model discloses a special-shaped part with long service life, and belongs to the technical field of special-shaped parts. A traditional special-shaped piece is often in contact with an iron nail on a wall, so that a hook part is easy to damage, articles cannot be hung, the traditional special-shaped piece is integrally discarded by people, and resource waste is caused; comprising a fixing ring, a fixing column is fixedly arranged on the upper surface of the fixing ring, and a limiting groove is formed in the fixing column; a fixing plate is aligned with a first moving groove to be inserted, a hook head is rotated, the fixing plate moves to the other end along a second moving groove, a rectangular pull rod is pulled, the rectangular pull rod drives a limiting rod to enter a telescopic groove, the end of the limiting rod leaves the fixing groove, then the hook head is pulled upwards, the fixing plate enters the fixing groove, and then the rectangular pull rod is loosened. The end of the limiting rod