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. The 2″ working length of the ball-tip hex of the BW251 is just right for the transformer bars with covers. Pull-apart strength is 3-5 times greater than others. High visibility yellow color. Quick flip reversing lever for instant ratchet reversal. BW251 has a reversible 90 degree Penta Ratchet on one end and a reversible 5/16″ Allen Ratchet on the other. Overall Length is 9″.