RoHS compliant Piezo ceramic element with feedback, can soldered with wires and connectors, Diameter from ... to 35 mm diameter "FT-12N-5.8B1" FT: Piezo element 12: Diameter T: Brass, N: Nickel-alloy, G: Stainless steel ... for detailed specification. Contact us for customized design. Piezo ceramic element (FT-12N-5.8B1)