ITEM NAME:10PCS MF-A04 Rotary Caps Potentiometer Knobs Counting Dial MO Specification: Product name: Bakelite Potentiometer Knob Model: A04 Mounting hole: 6mm Set Screw: Yes Material: Bakelite, Aluminum Diameter: 33mm Color: As Picture.Model: A04. Material: Bakelite, Aluminum. Set Screw: Yes.