1[Natural String Vibration] Designed for 4 string bass guitars, this pickup allows for natural string vibration and delivers outstanding sustain, bringing your bass playing to life. 2[Clean Sound Output] The pickup is meticulously crafted with triple wax dipping and vacuum sealing, eliminating unwanted feedback and noise to ensure a clean sound output. 3[Reliable Construction] Made with ceramic magnet, plastic, and metal, this single coil pickup provides durability and resilience for long lasting performance. 4[Precise Calibrated Holes] Each hole of the pickup is precisely calibrated to achieve a delicate and soft tones, enhancing your playing experience. 5[Complete Components] The pickup comes with all the necessary parts, including screws and springs, ensuring stable installation and easy setup. 2 x 4 String Bass Pickup 8 x Screws 8 x Springs