I sort of figured most braids were close enough in diameter so I never worried much about it. I got some JB 80lb blue solid that I wanted to try, because I have loved the hollow core for a long time. I have some Boat Braid and wanted to compare. One thing I noticed was the thickness by feel. So I pulled out the calipers and here is what I found: Jerry Brown Solid 80lb -color Blue - .0215in /.56mm Daiwa Boat PE6 80lb -color Multi - .0170in /.46mm Tufline xp 80lb -color Green - .0235in / .59mm Sufix Herculine 80lb -color Green - .0200in / .53mm Herculine is old school original braid back from when Jerry owned Sufix and no longer available, at least under that brand.