Material: Plastic (Push on fit without Set Screw) Total height: 11.8mm; Top diameter: 16mm Base diameter: 20mm Fits 6mm diameter pots Please check the dimension before you order the item Elevate your guitar effects pedal setup with our Dopro 10-pack of Mini Effect Pedal Knobs. Crafted from durable, 100% plastic, these modern, round knobs feature a sleek black finish with a silver cap, offering a stylish and functional upgrade. Each knob stands at 11.8mm tall, with a top diameter of 16mm and a base diameter of 20mm, fitting perfectly onto 6mm diameter pots. Their ambidextrous design ensures easy installation, making them a breeze to use, both indoors and outdoors. Perfect for Boss pedals and other similar effect pedals, these knobs are a must-have for any guitarist looking to customize their pedalboard.