Spring Tube Keeper Retainer For EL34, 6L6GC, 7027, 6CA7, 5U4GB And Other Tubes
Decent quality 'keeper' similar in design to those found on many '80s-present Marshall guitar amplifiers. Top piece 1.5" diameter, two springs are approx. 2" long, mounts to the tube socket mounting screws by two small "L" shaped clips.