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Rather than carrying around a bunch of nut drivers, carry only one with Klein’s Drive-A-Matic. As you place the driver over the fastener and turn the head, it automatically adjusts to the head of the fastener.

The Drive-A-Matic can fit 15 different nut and hex head screw sizes from 1/4″ to 7/16″. Klein chrome plates the 7″ hollow shaft driver for a smooth finished look, and uses the same black and yellow cushion grip that you’ve come to know and love.

You can find the Drive-A-Matic fro $25 to $43 depending on where you shop.

Drive-A-Matic [Klein]
Drive-A-Matic [Klien Connection]
Street Pricing [Google Products]
Via Amazon [What’s This?]

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11 Responses to Drive-A-Matic Nut Driver

  1. matt says:

    Klein is awesome. THESE ARE NOT.

    I bought one and in a year at work (underground mining electrician) I did not find a single use for this. The head is so big that any nut it will fit is easily accessed by an adjustable wrench (or better yet, the quadbox wrenches I carry made by gearwrench). The “self adjusting mechanism” also does not work good.

    Once again


    Drive-A-Matic=sucks ass

  2. Cameron says:

    Head looks way too big.
    If I don’t want to carry around a bunch of nut drivers, I’d just use a set of sockets on a 1/4″ spinner handle, or a set of sockets with a hex end for screwdriver handles with changeable bits.

  3. Toolhearty says:

    Cameron Says:
    If I don’t want to carry around a bunch of nut drivers, I’d just use a set of sockets on a 1/4″ spinner handle, or a set of sockets with a hex end for screwdriver handles with changeable bits.

    Seconded. I used to carry a universal nutdriver (made by Vaco, I think) in the tool bag at work. It was like a bunch of concentric tube wrenches. Push the tool down over the screw and the smaller sockets would retract with the “proper” one slipping over the head of the screw. I used it a few times, but the instances where it wouldn’t work were far more frequent.

    Now a carry a 1/4″ socket set and it’s not a lot heavier than that single nutdriver was.

    • Tango says:

      Toolhearty – if that tool you used to use has a yellow translucent handle and a chrome plated body it’s called a Sweeney Nesting Socket Wrench, made in Crystal Lake IL.

      I have one floating around and find it somewhat useful. If you want to get rid of yours lemme know. 😉

  4. ToolGuyd says:

    I agree with the others – it looks a bit too large to be practical for smaller fasteners.

    I wonder if this operates on a similar principal to the Gator Socket.

    Well, at least it has a hollows shaft, although can it really accommodate a 7/16″ bolt?

  5. matt says:

    It’s not like a “gator” bit. It’s got six jaws that close when you try to turn it (this is the part that I never thought worked really good). You put it on the fastener and start to rotate, immediately you’re past “square” with the nut (the jaws should grip in the center of the flats of the fastener, you’re already past that point when you start to turn) so right of the hop you’re trying to make up ground tigtening on your fastener.

    Trust me, Klein makes a lot of tools I couldn’t do without, but this one is completely useless.

  6. Jerod says:

    This is not a new idea, Craftsman and others offered one of these 30 years ago. It seams like alot of the not so great ideas are coming back again, I see Metwrench is surfacing on the tool truck sites as a “new product”.

  7. Mr P says:

    Used it a few times usallty wont fit and does not hold its size. So it good for one or two nuts if you can reach it. But more than that you still want a regular nut driver

    two thumbs down

  8. Brett From Utah says:

    No Bueno- from me too..I love my Klien stuff, but one of the guys I work with has one of these and we have all played with it a bit, and its just plain less hassle to use regular old nut drivers for most of our (lighting service and installation) work.(…in fact , for those who care,when working with lighting related fasteners, A Klien 11-in- 1 and a 11/32 nut driver cover 95% of what you need, and for anything else you’ll have to go back to the truck/job box for sockets, security bits and/or drills anyway…)

  9. Robert says:

    as others have mentioned, these have been around for at least 40 years…they sucked then, and I’m sure they still suck. Amazing that they are still produced.

    They must be popular with people who exist on the “fringe” of actual mechanical inclination and know-how…Copier repair people come to mind…

  10. Ben Eby says:

    When I was researching my tool, I bought one of these and was surprised how well it SUCKED. I have a small version of my tool that is designed to fix most of the problems this thing has- my site is http://www.triplelocksocket.com if you are interested

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