Nine Pin Top Chassis Mount Socket #90108. "QQQ" brand nine pin Noval chassis mount from above tube sockets for EL84, 12AX7 and other tubes. Made In Japan. Black phenolic body, tinned contacts and saddle. Similar to power tube sockets installed in original old AC-30s and other vintage amps. Very nicely made. Screw mounting centers 1 1/8" (1.125"), fits through a .75" hole in chassis. Set of six tube sockets.