This is a 1960's design and is Made in the USA out of Daka Ware -  these will fit a 1/4" shaft and afix with a set screw

perfect guitar pedal knobs, these were also used by Pultec, J Rocket and a few other manufacturers 

perfect if you have a small box Klon Clone and want some correct looking knobs(these are slightly smaller than the ones used on a Klon - see my other listings for those)

OTHER AMOUNTS ALSO AVAILABLE