Used Dunlop CBM535AR mini auto return wah. Adjustable range on slider, Q with knob, and a knob and button for boost. 100% functioning. Just pedal no box. Missing two screws, works fine with two. One screw hole may be stripped, not sure what previous owner was up to. Great sounding and space saving wah. I am just using my Morley Bad Horsie more. Thanks for looking!