Leave a comment below! Or click on an individual tool to see more or leave a comment about that tool.

• Speaking of impact driving screws, this is a peculiar device: a manual impact screwdriver. If you have a seriously stuck screw can you position this thing on it, then hit the back end with a hammer. This pushes the bit hard down into the screw while an internal wedge mechanism translates the hammer force into a rotational force on the bit, hopefully loosening the screw without stripping the socket.

• 1-4" Air Ratchet

• This brutally powerful air impact wrench weighs almost 30 pounds (13kg). Unlike similarly large power drills, it does not have a long handle out the side. That’s because it does not force the nut to turn: it just hammers and hammers and hammers until the nut decides on its own that turning would be the best option. Because there is no forced rotation, there is also no violent twisting to wrench your arm out of its socket. This tool is far too large to use on a car: it’s for nuts and bolts on large trucks or machinery.

• Impact Universal Socket

• An electric impact wrench is heavier and less reliable than an equally powerful pneumatic version.

• This pneumatic wrench isn’t light, but that’s because it’s a very large one, with a ¾” drive for the largest commonly-used sockets.

• A typical hand-held pneumatic impact wrench is light, loud, and strong. It should be used only with impact-rated sockets (typically black, for some reason).

• Angle adapters for impact sockets exist: this design is stronger, but has a more limited angular range.

• Impact Universal Socket

• This expensive air impact wrench has a titanium body, making it lighter than an equally strong steel version. The hammer inside is steel: titanium would be a silly material to make the hammer mechanism out of, because it’s light and not very hard, while hammers need to be heavy and hard.

Do you have a better example of this kind of tool? Let me know by leaving a comment, and include a picture of it if you can so everyone can see!