Amazon.com: DaierTek 10pcs Black Davies 1900h Clone Guitar Effect Pedal knob 1/4 Shaft Set Screw for Amplifier amp boss Volume Control : Musical Instruments
Guitar Pedal X - GPX Blog - One Knob Wonders! - 17 of the Best One Knob Pedals
1pcs of Stove Top style Knob,14.5mm*19mm, for Amp,Effect Ped
A blank white guitar pedal with vintage knobs and plugged jacks on the floor Stock Photo | Adobe Stock
Rubber Knob - Knurled Shaft - "The Curly" (16mm OD) - Love My Switches