If you have a air hammer this is a must have. It will allow you to pound away at a nut or bolt with out turning. You control the torque with a wrench as you hammer away. A real life saver if you don't want to break the bolt or nut.

Works great

I work on cars in a state that uses tons of road salt during the winter, the result is a lot of rusted solid nuts and bolts that would never come out in one piece using wrenches, ratchets, or an impact gun.<br />Case in point: brake bleeder screws; for years I've had to soak every single bleeder screw in heavy duty penetrating oil before attempting to open them with a wrench, and about 30% of them either didn't move at all or just snapped off. First time I used the Shake n Break was on a worst case scenario: a 22 year old Honda, the bleeder screws were barely recognizable, just little nubs of rust. There was enough left of them to use the tool on fortunately, and it was almost miraculous how easily the bleeder screws came free. This is probably going to end up being one of my most used tools.<br /><br />The only negative aspects of the tool is there is no retainer to hold a socket on, and there is a deluge of dirt and rust raining off the car every time I use it (but that's not really the Shake N Breaks fault).

Works great for removal of rusted blots and screws.

This tool is used in an air chisel, you attach the proper sized socket on the end. Then you put a 3/4 or 19mm open end wrench on the hex portion of the tool. Put the tool and wrench over the nut as you pull the trigger on the air chisel you can easily turn the wrench to loosen the bolt. Basically it rattles the bolt as you loosen it. I have used it on many rusted exhaust nuts and bolts including manifold bolts. It removes them all with unbelievable ease. Typically I would have cut the bolts off, but now I don't even break out the torch.<br /><br />The only drawback is the length of this tool 5&#34; plus the length of the air chisel. It will not fit in tight places. But I highly recommend this tool, it saves so much time being able to remove bolts instead of cutting them off.