Abstract: A coupling secures a mannequin head to a mannequin head holder. The mannequin head holder has a stem. The hair mannequin head has a neck with a base. An opening is formed in the base. The opening extends longitudinally into the neck for receiving the stem. The coupling has a neck engaging member, a retention mechanism, a stem engaging member, and a bridge. The neck engaging member has a pair of arms extends substantially parallel to one another. The retention mechanism is affixed to each arm and, together with the arms, grasps the neck of the hair mannequin head. A notch is formed in the stem engaging member. The notch defines a plane and has a longitudinal axis perpendicular to the plane. The longitudinal axis passes between the arms of the neck engaging member. The bridge fixes the relative positions of the neck engaging member and the stem engaging member.