piezo buzzer 20mm

Color: see picture
Material: Copper, PVC
Diameter:20mm
Wide tonal response
Speech and music applications
Piezo Discs For Buzzer Pressure Sensor Speaker DIY
Note:
1.Transition: 1cm=10mm=0.39inch
2.Please allow 0-3mm error due to manual measurement. pls make sure you do not mind before you bid.
3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
Package includes:
10x 20mm buzzer sensor