Gretsch originally used these knobs on guitars from 1957 - 1967. These knobs are designed to fit 1/4" solid shaft pots. The first thing you will notice when picking up Gretsch knobs is their weight...nice and heavy like a Cadillac, but the knurled edge makes for effortless gripping. Works perfectly with TV Jones harnesses and most all vintage/pro Gretsch guitars. Sold individually.