Klein Tools 32807MAG 7-in-1 Multi-Bit Screwdriver / Nut Driver, Magnetic

The 32807MAG carries seven SAE nut driver sizes in one tool: 1/4, 5/16, 11/32, 3/8, 1/2, 7/16 and 9/16 inch. The bands are color coded so you can pick the size by eye instead of test fitting. It's SAE only, so if your job is on metric fasteners this is the wrong driver.

No. The 32807MAG is not insulated and will not protect against electrical shock. Don't put it on energized conductors or terminals. If you are working live, you need a driver rated and marked for insulated use; this one is a general electrical and MRO hand tool, not a 1000V tool.

Yes, on five of the seven sizes. The 1/4, 5/16, 3/8, 7/16 and 9/16 inch shafts are hollow, so the rod or bolt passes up through the driver and you can run the nut deep instead of stopping when the thread bottoms out. That is the size range that matters for strut, all-thread hangers and deep bolt work.

It holds fasteners two different ways. Rare earth magnets do the work on the 1/4, 5/16, 11/32, 3/8 and 1/2 inch sizes, and the 7/16 and 9/16 inch sizes use a spring coil that grips the nut mechanically with no magnet involved. Either way you can start a fastener overhead or in a panel with one hand. The spring coil sizes are the ones to reach for around anything you'd rather not magnetize.

Shaft length is 4 inches (10.2 cm) with an overall length of 9.54 inches (24.2 cm) and a 5.5 inch (14 cm) handle. That 4 inch shaft is what sets how far into a device box, panel gutter or enclosure you can get before the handle bottoms on the face.

The 32807MAG has a heavy duty steel handle and shaft that exceed the torque performance of a regular nut driver, plus a wrench assist on the handle so you can put a wrench on it for the last of a stubborn fastener. It still isn't a ratchet. For repeated high torque work, or anything you need to torque to a value, use a socket set. Also don't pry or chisel with it.

Five pieces make up the set: the cushion grip handle plus the interchangeable shafts that give you the seven sizes. They store in the tool rather than in a case, so a tech carries one item on the belt instead of a tray of individual nut drivers. Worth knowing when you are kitting out multiple crews and want a single line item.

1.42 lbs, with a black cushion grip handle. That is heavier than a single nut driver because you are carrying seven sizes plus a steel handle built for torque, and it is a good bit lighter than the individual drivers it replaces in the pouch.