Seller: ampparts16 ✉️ (2,623) 99.6%, Location: HK, CN, Ships to: WORLDWIDE, Item: 192409216902 2pcs Ceramic 9pin Noval Tube Socket PCB For 12AX7 12AU7 Audio Amp Parts. 9pin Noval Tube Socket PCB Ceramic For 12AX7 12AU7 For 9pin B9A Base tubes 12AX7 12A7 12AU7 6N11 6922 6DJ8 6N3 and So on Outer diameter 25.50mm. Condition: New, Type: tube sockets, Brand: Unbranded