20PCS 12mm Piezo Elements Sounder Sensor Trigger Drum Disc + wire copper S Ew

ITEM NAME:20PCS 12mm Piezo Elements Sounder Sensor Trigger Drum Disc + wire copper S Ew.Quantity: 20pcs. 12mm with flying leads. Material: Copper,PVC. Storage Temperature(℃ï ¼â€° -30∠½+80. Wide tonal response. Capacitance at 120Hz(NF) Co=11 ±30%. ).