Let's bomb bass string manufacturers with e-mails, asking for info. about the tension of their bass string brands. Maybe we can force them to suply this info. on web sajts and pakages. Here's a link. Pleace feel welkome to complete this list/link http://www.electricbluesclub.co.uk/accessories.html#strings I know that Daddario and Thomastic Infeld suply this info. but there ought to be others.