White ceramic body, top mounts through a 1" hole in the chassis, 1.5" mounting centers, bent two hole solder lugs on the bottom. Two point 'knife' contacts. Fits 6L6GC, 5U4GB, 6V6GT, 6SN7GT, 6SL7GT, GZ34, EL34, 5881 and many other guitar amp tubes. Manufactured in China. This socket is similar to the octal tube socket found in many modern Fender tube guitar amps.