Big Knob for FiiO E10K DAC/Amp 3D Model almost 2 years 13 Tall Knobs for Rolls Stereo Mini Mixer (MX42ROLLS) 3D Model almost 2 years 8 Potentiometer Knobs - 20mm and 25mm 3D Model almost 2 years 1 Dial Knob 3D Model almost 2 years 2