The handle is formulated of a high strength and high dielectric polymer. A see through port in the center of the handle confirms that the two ends are not electrically connected. Tool metal-to-metal electrical isolation is superior to others. Special end combinations allow line workers to carry one tool that will install hundreds of different connectors. Combinations such as 9/16″ and 3/4″ can not be found at the local hardware store. The 3/4″ and 9/16″ combination is just right when installing or performing maintenance on overhead transformers and secondary pedestals. Pull-apart strength is 3-5 times greater than others. High visibility yellow color. BW2090P has 3/8″ Allen Ratchet on one end and Penta Socket on the other end. Overall Length is 9″. BW2093P90 has 5/16″ Allen Ratchet on one end and 90 degree Penta Socket on other end. Overall Length is 9 1/4″.