Hi everyone, I've send E-mail to Rotosound for those information but they didn't pay any attention to my request , maybe they don't care for a new client!!! Despite of that, i'd like to know if their RS4000 are Flatwound ou round wound, if it's bowable, if the tension is high medium or low....and any informations you can give on those strings are welcomed. I play jazz be-bop and hard bop i play bowed choruses sometimes, and i also play rock'n'roll and rockabilly stuffs, i'd like to know if this kind of strings would fit those kind of play, even if this firm don't care about professional player like I am!! In advance thank you!! Sorry for my english i'm french!!