The knobs in our production are mainly metal knobs (aluminum knob copper knob, alloy knob), plastic knobs (Bakelite knob), mainly for electrical knob (tuning knob, multimedia knob, the audio knob indicates the scale knob volume knob), instrumentation knob, potentiometer knob, switch knob. Here is only part of the knob products, if you need to have something specialized, we can put it into production as soon as possible. Please consult delivery cycle.