Trying to find a heavy-duty nut drivers? Look no more with the Klein 630-4.5MM nut driver. It features a full hollow shaft that facilitates work on stacked circuit boards or even on long bolt applications. It also has a cushion-grip handle, allowing you to experience comfort and greater torque while doing the job. This nut driver is plated with premium chrome to create a smooth feel as well as to resist corrosion. This is measured 4.5mm in size for an exact fit. Quality wise, this has also met and exceeded the standards of ASME/ANSI. Committed to give you the tools that you deserve, Klein continues to manufacture products that are durable and of high-quality. In partnership with PlumbersStock, they are now available at an affordable price. Search yours now!