Two new, never used 44kHz Ultrasonic Transducers. It's 2" in diameter and can handle 55 watts of power. Best used for ULTRASONIC CLEANERS, or experimenting with ultrasound. Has the bottom electrode brought to the top to make connecting wires easier. You're purchasing TWO transducers although only one is pictured.
Just epoxy it to the bottom of a steel tank and power it using an ultrasonic driver or our 100W Ultrasound Generator. The transducer capacitance is around 7000 pF. Here's a calculator to find the exact value of required inductor if used with ultrasonic generators.