10pcs Adjustable Rotate Button Potentiometer Control Knobs and 10pcs 0-100 Scale Sheet Product Name: Potentiometer Control Knobs; Material: plastic,metal Dial Face Plate Control Range: 0-100; Panel Dia.: 40mm/ 1.6inch; Mounting Hole Dia: 10mm/ 0.4inch ;Thickness: 0.75mm. Overall Size: 26 x 15mm/ 1.06" x 0. 60"(D*H); Knob Top Diameter: 23mm/0. 9";Fit for Shaft Hole Dia. : 6mm/ 0.23" Wide Application: Ideal for control the effect of a variety of functions,such as level, speed, voice, etc.Can be used for synthesizers, electric guitar,etc. Package Included: 10pcs potentiometer knob and 10pcs counting scale sheet