Smooth metal knobs with rubber o-rings and a plastic inner bushing. Sold individually.
Overall Height: 11/16"
Base Diameter: 3/4"
Ideal Shaft Fit: Split Shaft (6mm)
Fit Type: Push-on Coarse (18 spline)
Tech's notes: "These fit on split shaft pots with a coarse spline (18 spline). They will NOT fit on solid shaft or split shaft pots with a fine spline (24 spline.)"