Phosphor bronze bass guitar strings. The final cover is run through precision rollers during the winding process, slightly flattening the wrap. This process results in the first phosphor bronze bass string that does not have harsh and abrasive overtones and finger noise, just a smooth mid-focused sound. Pressurewound Bronze are also designed in such a way that they also work well with electric basses. Gauge: .042, 054, .076, .92.