ITEM NAME:2PCS Generic 9pin PCB tube socket GZC9-F-B-55 Aluminum shield FR 12AX7 12A OZ Description: Brand New 9pin tube socket with Aluminum shield PCB MOUNT Color: Silver Material: Ceramic socket, aluminum shield (spring inside) Quantity: 2PCS/lot Suitable for 12AX7,12AU7, etc. tube height less than 45mm Mounting screw Hole Distance: 28mm Panel Cut Out Diameter: 21.50mm Package included: 2pcs.Suitable for 12AX7,12AU7, etc. tube height less than 45mm. Material: Ceramic socket, aluminum shield (spring inside). Mounting screw Hole Distance: 28mm.