Tremolo
https://www.amazon.co.uk/Rowin-LEF-327-Trelicopter-Photoelectric-Tremolo/dp/B01IV510DG/ref=sr_1_fkmr1_2?s=musical-instruments&ie=UTF8&qid=1539550006&sr=1-2-fkmr1&keywords=rowin+trelicopter
This Pedal is currently available.
How much is the fish?
