Hey everyone im just wondering does anyone know the term for a tool i seen it has 3 prongs in it and ya slip a black rubber on it and press the handle and the rubber expands,you then slip in ya cable close the handle and the prongs clamp the cable and ya take the tool out leaving the rubber on the cable its leaves a heatshrink effect im looking to buy one on ebay thanks in advance i tried to explain it as best i can and none of the foremen at work know the proper name for it