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I am not familiar with Fireline Crystal or K9 Crappie Braid, but I have very little faith in the diameters and breaking strengths reported by most manufacturers of USDM lines. If one is curious about a thin JDM line, I'd recommend taking a look at Duel Armored F+ #0.04 or #0.06 (those numbers correspond to Japanese braid numbering system, not diameters). I'd be surprised if one was not blown away by their thickness, especially when compared to some reportedly low diameter USDM lines.
I was having same thoughts as I was reading through this thread. US market jig head weights are not what they are stated....US market line breaking strengths are not what they are stated...not even close in most cases. The Japanese are so far ahead of us on fishing gear it is not even funny....lines...rods.....reels. Folks may debate the price charged........may say it is not worth it.....but one thing's for sure....they produce a superior product and there is no debate on that.
Regards
It is .06mm or you can get the .04mm. I have been researching this line for a year now. But at these diameters I know I will not be able to see it even though it is hi-vis. The smallest line I ever tried was an .085mm polyester line in hi-vis. Took it off the same day I tried it out....literally could not see it.
Regards
I believe Techno2000 is correct. The 0.06 mm diameter would typically correspond to #0.1 PE, not #0.04 or #0.06. The lines I've mentioned are quite a bit thinner, they look a lot like fibers in a spider web. They are also very sensitive to the type of knot used and are quite difficult to handle. I am very happy with 0.074 mm ester (just fished it today, a small bluegill felt like a monster on that setup) and will probably go down to 0.06 mm PE, but I am unlikely to use anything thinner than that in the future.
Right,they say the JP Line # 0.4 but the mm is 0.011
Duel Armored F+ Pro (PE spectra line, hard coated) - Lines