Product Description LINEA PRESSURE WOUND 45 65 85 105 From the Manufacturer The original pressure wound stainless steel bass string designed in the mid-1970s. Similar to our Swing Bass 66 strings but with a smoother feel. Due to rolling, mass is retained and therefore its brightness. Our half wound Solo Bass 55 strings eliminate finger noise, reduce fret wear, work well on fretless basses and excel in the studio.