Generic Set-Screw Radio Knob (1930s, 3 Sizes)

A versatile set-screw knob that fits a wide range of 1930s radios, including many Detrola and Truetone sets.

Available in three sizes — small (13/16" wide), medium (1" wide), and large (1-1/8" wide) — each with a 1/4" hole and included set screw.