Rotosound RS66LD Swing Bass Guitar Set - Stainless Steel Roundwound 45-65-80-105 Long Scale Standard Gauge The innovative airtight foil packets, ensures strings inside do not tarnish or fade by providing an unrivalled moisture barrier. The packaging creates a stable environment, which keeps the bass strings factory fresh until opened. In addition the new Rotosound foil packs use 90% less material, making them their most eco-friendly yet. Rotosound bass strings now come with Red, White and Blue colour coded ball ends. To restring your bass guitar simply remember RWBRWB and the job is done. The pack’s new artwork has a modern clean look with bold colours and clear instructions, making them noticeably different, and very recognisable.