ITEM NAME:20 x Golden 20 mm Slide Film Ceramic Disc Piezoelectric Buzzer S2L2 20 x Golden 20 mm Slide Film Ceramic Disc Piezoelectric Buzzer S2L2 Product Name: Buzzer Disc Drive type: piezoelectric type Color: golden Weight: 12 g Material: copper Package: 20 x buzzer disc Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.