The Klein Tools Lineman's Insulating 4-in-1 Box Wrench stands out as the sole double-ended 4-in-1 wrench on the market that meets the ASTM 1000V standard. Its transparent handle gives you a clear view to ensure the metal ends aren't in contact. This sturdy and long - lasting wrench comes with four 12 - point socket sizes: 1/2", 9/16", 5/8", and 3/4". Included in the package is one insulating wrench. It not only meets the ASTM 1505 - 10 1000V rating but also features a see - through insulating handle to confirm the separation of metal ends. With four useful sizes in one tool and 12 - point sockets, it's very practical. You can reverse the ratcheting action by using the switches at each end of the wrench. The textured grooves on the handle help prevent slipping, and the chrome - plated finish resists corrosion. Measuring 9' (22.9 cm) in length and weighing 11.2 oz (318 g), it's a reliable tool for linemen.


Using this Klein Tools 4 - in - 1 box wrench is easy. First, select the appropriate socket size (1/2", 9/16", 5/8", or 3/4") according to your needs. Then, place the socket on the nut or bolt. You can reverse the ratcheting action by flipping the switches at either end of the wrench, which is very convenient when you need to tighten or loosen quickly. When using it, always make sure the voltage of the working environment does not exceed the 1000V rating specified by ASTM. Check the transparent handle regularly to ensure the metal ends are not connected. This is crucial for your safety. As for maintenance, keep the wrench clean after each use. You can wipe it with a dry cloth. The chrome - plated finish is resistant to corrosion, but if you notice any signs of rust, you can use a mild metal cleaner. Store the wrench in a dry place to prevent damage.