Octal 8 Pin Black Phenolic Western Electric Style Tube Socket For 6L6GC, 5U4GB etc. Styled roughly after old Amphenol sockets. Black phenolic body, tinned knife contacts, double holes in solder lugs, press-fit nickel plated metal mounting ring. Fits through an approximately 1.140" hole in the chassis, 1.581" screw mounting centers but the elongated holes allow for wide latitude of adjustment.