High quality socket saver made with factory JJ Electronic bases and Belton sockets. Unless requested we leave the mounting bracket on the socket for permanent installation and ease of use.
These are handy if you're trying to use a bias probe in an amp with recessed sockets or for permanent installation in a test fixture.
The mounting holes are approximately 1.6" measured on center. The seated height is 0.815" as measured to the face of the socket.