These 8-pin vacuum tube sockets are designed for chassis-mounting octal-base and 8-pin subminiature tubes across a wide range of vintage radio, audio, and industrial applications. The 8-pin octal saddle socket fits standard 8-pin octal base tubes (such as the 6V6, 6L6, 5Y3, and 6SN7), securing to the metal chassis via a sturdy steel mounting saddle. The 8-pin subminiature socket accommodates compact wire-lead or pin-base subminiature tubes used in portable receivers, hearing aids, and specialized military electronics. Both styles feature durable phenolic or molded ceramic bodies paired with tin-plated solder terminals for secure under-chassis point-to-point wiring. Available NOS and new stock.