Pat, this is a b-50 Flemish string I made for tillering. The top loop is just a bowline the bottom has a bowyer hitch. Ive been using it on the last few bows, its stretched good. I shot a few arrows with it on that last bow I made. I will make one today but I like to stretch my strings between two trees with ratchet straps for a day. Strings I learned to make as a kid, kinda set in my ways on those, but I'm open to any advice on tillering strings as I'm new to those. I figured a string with the least amount of stretch and the best fit was best?