Musiclily Hat Style Speed Control Knobs for Electric Guitar Knobs Parts, Black(Pack of 4) Metric Size, ideal for Asia made(China, Korea, Japan) 6mm diameter shaft import pots. Not for inch size pots like Fender, CTS, Dimazio pots. ^Material: Plastic: Color: Black ^Bottom of the knob: approx. 26mm in diameter; Top of the knob: approx. 16.5mm diameter; Height: approx. 14mm high, Hole for pots shaft: about 6mm diameter ^Metric Size is popular in guitars bass made outside the USA/Mexico. ^Package includes: 4 pcs control knobs