【Durable Material】: These effect knobs are made of ABS plastic, which are durable, not deformed and not easy to break。 【Good Bite Force】: Our 360 degree knob will bite the screw, clamp it effortlessly, and rotate the shaft according to your intention. They turn well on the screws so that you can adjust them. 【Widely Application】: These cockhead knobs are widely used as effect pedals, potentiometer knobs, volume knobs, etc. of electric guitars, power amplifiers, stereos, lighting and other electronic equipment. 【Dimension】: Total height of control knob: 16mm/0.63 ", length: 31mm/1.22", width: 19mm/0.75 ", diameter of mounting hole: 6mm, suitable for 1/4" (6.35mm) shaft groove. 【Carefree Shopping】: If you have any questions, please feel free to contact us, and we will reply within 24 hours. Thank you for being our customer!, Weight: 0.14991433816 Pounds, Manufacturer: Setaria Viridis