M-Gear Expression pedal is a great option for use with Electro harmonix pedals and other effects that have the option for Expression. This pedal is Included with the electro-harmonix Hog Synth.
Does what it says on the box Review by Zip Spooner
Plug and play really, all plastic and rubber but looks like it'll stand up to road use, my old plastic ibanez wah still works after 20 yrs abuse! (Posted on 15/05/2012)