Robert Trujillo has been using the EMG J Set since before his days in Metallica. And now he is truly metal, trusting his original tone combined with a modern look. Because of these custom stainless steel caps, these pickups maintain their original sound used in the industry for decades. The pickups are designed for traditional 4 string jazz bass spacing and are suitable for narrow 5 string instruments. They come with EMG's solderless wiring harness for a standard volume, volume tone setup.