Rotosound SM55 Solo Bass Pressure Wound Bass Strings 40-100Another first designed in 1977 by James How is the stainless steel bass string with his patented linea pressure wound finish. Once the string is wound a rolling technique is applied under pressure which displaces the crown of each winding producing a flat that reduces finger noise and friction thus allowing for more rapid finger movement. The linea effect accentuates the middle frequencies resulting in a tone quite different from a normal round wound