Rotosound JAZZ BASS 77 Flatwound Bass Strings MONEL Flatwound - Smooth Feel, Smooth Tone Monel is a unique alloy, with it's own unique magnetic characteristics and tone. Not surprising it should make a great sounding bass string wrap. Rotosound JAZZ BASS RS77's are made with flatwound monel wrap, for a smoother feel and sound. Rotosound RS77 JAZZ BASS String Data Stock No. G D A E B RS77LD Best Sellers 45 65 85 105 RS775LD 5-Strings Bass 45 65 85 105 130 Clearly, RS77 monel flatwound bass strings have developed a reputation for bright tones that sound smooth and clear, with no sharp edges to their tone. They are a great studio string, where low finger noise is important. as well as durability and long life. Monel is extremely corrosion and oxidation resistant, which help extend the life of any bass strings that are played a lot. Monel is an alloy composed of nickel, copper, iron and a few trace elements. It's more expensive than stainless steel, but it makes a great sound and Rotosound thinks they are worth it. That's why Rotosound has been making bass strings with monel flatwound wraps since 1962.