This rotary control knob is made of plastic and metal, providing a sturdy and durable design. Featuring a high-end appearance, it is suitable for electric bass, electric guitar, potentiometer, and similar applications. Ideal for volume and tone control on musical instruments. Features - Color: Green - Material: Plastic, Metal - Size: 1.80 x 1.80 x 1.80 cm / 0.71 x 0.71 x 0.71 in - Constructed from selected materials that are resistant to deformation and breakage, ensuring long-lasting durability and practical use - Easy to install; the knobs resist aging, with solid construction for enhanced durability and anti-corrosive properties - Designed to connect with a rotary potentiometer, commonly used as a volume control - Simple structural design allows for straightforward installation without affecting instrument performance - Perfect for use as guitar tone and volume control knobs; a great accessory for guitar players Package List 9 x Knobs 3 x Wrench