1.Electric piezo element:Dimension 11-50mm 2.Used in :toy,alarm,doorbell,siren etc. 3.No MOQ 4.Prompt delivery This product ... is used in washing-machine,telephone,siren system computer system,alarms,toy,ectPrice as following: Item1-5000pcs5001 ... -20000pcsover 20000 pcs15-11 Copper piezo$0.0138$0.0127$0.012220-15 Iron piezo$0.0122$0.0113$0.010820 ...