The Graph Tech TUSQ GT12W Slotted Nut is specifically designed for 4 string bass guitars, measuring 1.615 x .182 x .348 inches. This high-quality nut is crafted from TUSQ material, which is known for its ability to enhance tone and improve tuning stability. Key features of the Graph Tech GT12W include: - Slotted design tailored for bass guitars - Made from premium TUSQ material - Provides enhanced tone and sustain - Improves tuning stability and string spacing This nut is an ideal upgrade for serious bass players seeking to enhance their instrument's playability and sound quality. Whether in the studio or on stage, the Graph Tech GT12W nut delivers consistent performance, making it a reliable choice for any bassist.