I bought a fischer M-Pro no.1 98 on**** and the seller, from China, sent along a 40' length of string, that was not mentioned in the description. so I decided to use it, to save 4 and out of curiosity. I will hit with it for the first time, tomorrow and see how it feels. does anyone know what this string may be? I looked at it under a USB microscope and it does look to be a single, round string,but with 2 colors.