Fulltone Supa-Trem Jr Tremolo, modified so that You can control RATE via an expression pedal (one controller - either pedeal or knob). Original packaging included; very good condition. I’m a private seller, this is from my collection which was only used in home. Items that I sell are working and tested, recorded on video and packaged carefully to asure a satisfying transaction. Please contact me if You have any questions, as no returns apply.