Ok, since the link in the OP won't work after this week here's the pedal!
It's a clone of the Snow White Auto Wah... thus... SWAH ...so as not to step on any trademarks or copyrights.

Yes... I know I mis-spelled SWAW


It's just a Hammond 1590BB prepainted box from Digi Key and "graphics" from a P-Touch Label Maker. But hey, It gets the job done!

Knobs are from Small Bear Electronics.