9pin Ceramic Vacuum Tube Socket Valve 53mm Aluminum Shield for 12AX7 12AU7 Tube,Red Pack of 4

What is this?
Aluminum shield cap with built-in spring can quickly dissipate heat and effectively protect the electronic tube from damage

What will I get?
Model: 9G-55
Height: 53mm/2inch
Installation diameter: 3mm/0.11inch
Installation hole spacing:28mm/1.1inch
Outer diameter of shield: 0.96inch
Suitable for 9pin tube socket and  for model 12AX7,12AT7,12AU7,ECC83,ECC82,E88CC 6922   6n1 6n11 etc.Tube
Pack of 4pcs Tube Socket

Is there any advantages of the product?
Made of Aluminum Durable and not easy to rust.

How to use it?
Align the snap and directly push the tube socket base to complete the installation

What should  I notice?
Please confirm the model and the size before you buy.