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[ATTACH]9442[/ATTACH]
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The legs are hinged with two hex cap screws and wing nuts that hold them in either the raised or lowered position. To lower the legs, you just remove the inside cap screw, drop the leg down and reinsert the screw into the lower hole.
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[ATTACH]9443[/ATTACH].
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[ATTACH]9447[/ATTACH]
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Since the bench has the hinged casters under the legs, the legs for the extension table had to be adjustable depending on whether the bench was on the wheels or directly on the ground. To make them adjustable, I used 1/2-13 x 6" carriage bolts on the bottom of the extension table legs.
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[ATTACH]9448[/ATTACH]
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First drilled a 1/2" diameter hole 6" inches deep in the bottom of the legs. Then I installed a 1/2" T-nut to screw the carriage bolt into. (Ignore the wing nut in the picture. I didn't use it. I was going to use it as a jam nut but that was overkill. Oh, and it's upside down in the photo also.....

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[ATTACH]9446[/ATTACH]
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Real quick and dirty way to get extra bench top square footage. Little paint (maybe) and it's a done deal.