9 Pin Socket Saver For Tube Testers Fits 12AX7A, EL84, 6CA4, 12AT7, 12AU7, ECC83, #9624

For 9 pin miniature tubes like 12AX7, 6072A, 12AT7, 6CG7 etc. You can install a longer bolt through the center to fix the socket saver to your tube tester. New.