... . Size: 9*15, 7*14mm 3. we can product your design crystal earphone dust cap plug1. Processing machine: CNC lathe2. Material: brass ... , MP5 ect.5. Finish: Nickel, Zinc, Gold plating and so on.6. Size: 9*15mm, 7*14mm7. Packing way: (1). polybag ... , by air, by express (DHL, FEDEX, UPS, TNT and so on) crystal earphone dust cap plug