These aren't folding legs but IMO they look a lot nicer. I bought them about 10 years ago and they've held up GREAT. They unscrew easily when you need to transport or store the table and the bottom has an adjustable piece that allows you to adjust each individual leg in case you take your table somewhere and there's an uneven surface.
They're $80 normally, which is what I paid for em a few weeks ago for my new table but they're on sale now for $50, which is a hell of a deal:
http://www.rockler.com/black-adjustable-table-leg-set-set-of-4
While looking for the above link, I also found that they sell the same type of legs in folding style. Not sure if they're the exact same legs but they sure look like it in the picture so I may return my screw on legs and get these, which are also on sale. Normally $68 on sale for $40 (says they're out of stock til April 1 though):
http://www.rockler.com/click-foldable-table-leg
I also saw the screw-on legs in silver on their site so I imagine the folding legs come in silver, too.
Edit: Just ordered the folding legs lol. Thanks for posting this thread bc I wouldn't have noticed em if you hadn't (y) :thumbsup: