3pcs New F16mm Ultrasonic Mist Maker Fogger Ceramics Discs for Humidifier Parts 3 pcs 20mm Ultrasonic Mist Maker Fogger Ceramics Discs with Wire & Sealing Ring New Φ20mm Ultrasonic Mist Maker Fogger Ceramics Discs with Wire & Sealing Ring Diameter: Φ20mm Thickness: 1.24 ± 0.01mm Frequency: 1.7MHz Quantity: 3pcs This mist disc with wire can not be connected with power directly, it needs a separate driver "circuit" We are not responsible for any experiments done, Burn , blast , broken disk "due to experiments" will not be replaced