Abstract: A pair of opposed arms include rearward portions which extend tangentially from the cylindrical sidewall of a rigid connecting structure. The rearward portions diverge to substantially parallel intermediate portions having forward portions extending therefrom. A jaw having a face terminating in a nose is carried by each forward portion. Each arm increases in width from the connecting structure to a finger purchase area of the intermediate portion adjacent the forward portion. A rib, integral with each arm, extends from the jaw through the sidewall of the connecting structure and extends therefrom throughout the extent of the sidewall bounded by the arms. In response to compressive force applied to the purchase areas, the arms bend arcuately until the noses of the jaws abut. Continued force causes the jaws to meet in face-to-face relationship.