40pcs 6mm Knurled Thread Dia Roatory Potentiometer Knob 4 Color Product Name : Potentiometer Knob;Material : Plastic Color : Black, Red, Yellow,Green, Blue;Fit Insert Shaft Dia : 6mm/0.24"Knurled Shaft Overall Size : 15 x 17mm/0.59" x 0.67"(D*H) Weight : 50g Package Included : 40 x Potentiometer Knobs