What diameter lines work in the arrow?
PHILIP M You'll have no problem with reel lines up to 1/8" and, of course, anything under that. The little holes easily accommodate a double wrap through each slot. In a pinch, if you need to fit tight fitting larger lines, you can file the slots to make them wider.
BRIAN O It is designed for small lines, 1/8 to 3/16 is my estimate. It works with most lines that come with small floats.
PERSONAL S #24 weight lines work well with this arrow.
I have also used #22 line but it is a bit harder to thread.
You might get away with something like # 20 but I have not tried that.
#26 on long spools (200 ft) is what I normally use and I find this works best for me.
Hope this helps
ROBERT R I did not buy this