Brand Integrity: Manufactured by NIGHTKIST, this volume rotary knob is crafted with precision to ensure seamless compatibility with BMW 3 Series models including E90, E81, E82, E87, and E88. Each piece is meticulously designed to meet the high standards expected by BMW owners. Enhanced User Experience: The ergonomic design of the rotary knob allows for effortless volume adjustments, enhancing the overall audio control experience. Its smooth surface and intuitive operation provide a superior tactile feedback that aligns perfectly with the luxury and comfort of your BMW. Durable and Reliable: Made from high-quality materials sourced from Mainland China, this knob is built to withstand the rigors of daily use while maintaining its aesthetic appeal. The robust construction ensures long-lasting functionality, making it a reliable replacement or upgrade. Easy Installation: This rotary switch knob is designed for a quick and easy installation process, allowing you to replace your old or knob without the need for professional help. It perfectly fits into the existing space, ensuring a secure and stable fit. Sleek Aesthetic: The sleek black finish of the knob complements the interior of your BMW, maintaining the luxurious feel of the vehicle's design. It not only functions seamlessly but also enhances the visual appeal of your car's dashboard. Description: This rotary switch knob is the ideal replacement for or worn-out original parts, ensuring your audio system functions perfectly.Crafted from a robust blend of PC and ABS materials, this knob is designed to withstand various conditions, offering long-lasting reliability and performance.The knob is engineered for a seamless fit into your vehicle's audio system, enabling a hassle-free upgrade. Specifications: * Part Name: Audio Radio Volume Rotary Switch Knob