Trying to find a heavy-duty nut drivers? Look no more with the 635-4 4-piece nut driver set. It features a through-handle hollow shaft that allows easier nut driving as you can tighten the nuts in various locations. Its strong rare-earth magnetic tip creates a secure placement of the nuts while fastening and greater torque can be achieved with its wrench-assist feature. It also has a cushion-grip handle, allowing you to experience comfort while doing the job. This set includes sizes of inch, 5/16 inch, ? inch and 7/16 inch. Klein Tools has always been dedicated to create high-quality tools along with the assurance of comfort and convenience. Klein Tools never fails to give you peace of mind. Get their tools now here at PlumbersStock!