Cary 4pcs Mini 7pin Gold Ceramic Vacuum Tube Sockets Valve Base B7g 6au6 Ef95 6c4 6x4 Condition: New Quantity: 4 pieces For 7pins tube: B7G 6AU6 EF95 6C4 6X4 EAA9 EC92 6Z4... Useful Life: 200 times Gold plating