Rotosound RS555LD Solo Bass Pressure Wound Bass 5 String Set 45-130Another 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