20mm Uncased Piezo Description These 20mm Uncased Piezo elements have 90mm fly leads. They require an external drive circuit to produce sound. Features: Simple, inexpensive uncased piezo. https://elecena.pl/product/16411747/20mm-uncased-piezo 2020-04-09 https://elecena.pl/product/16411747/20mm-uncased-piezo 2020-09-01 https://elecena.pl/product/16411747/20mm-uncased-piezo 2021-03-02 https://elecena.pl/product/16411747/20mm-uncased-piezo 2021-04-01 https://elecena.pl/product/16411747/20mm-uncased-piezo 2025-07-09