This wrench features a zero-travel extension that lets you reach fasteners in tight spaces without sacrificing leverage or mobility. For your tools, the extension socket lets you switch between 3 adapters to fit your socket or impact driver (not included). The extension wrench tool includes a 3/8" to 1/4" drive adapter, a 3/8" to 3/8" drive adapter, and a 3/8" to 1/2" drive adapter. A torque wrench allows you to easily reach hard-to-reach areas under the hood. The thickness of the socket adapter kit with extension is approximately 19 millimeters, which can be used in small spaces. You don't have to worry about this torque wrench bending or breaking at the joints; the angled extension wrench is made of durable aluminum and can withstand long reuse when servicing your vehicle.< /p> The size of the base extension assembly is 15 inches (39 centimeters); the weight of the torque wrench adapter is 0.7 kilograms (1.7 pounds);