MOTM style knobs available in multiple sizes with no minimum quantity!
These are all 6.4mm (0.25") shaft size with high-quality brass inserts and a set screw - not the cheaper version without the brass insert.
These knobs are the same as or similar to those used by clarke68, Pittsburgh, BOSS pedals, MOTM 5U, etc.
19.5mm Size = SM (as seen in the product photo)
“BOSS SMALL” STYLE KNOBS 1/4” SHAFT BLACK
27mm Size = MD (as seen in the product photo)
"MOTM” FLUTED STYLE MEDIUM DIA KNOB 1/4” SHAFT BLACK