1: The cross section of the working part is an equilateral triangle.
2: From the tip of the needle to the end of the public part, the cone angle increased significantly.
3: The number of barbs was less (less than 9);
4: The size of the crochet on each edge changes gradually: the closer to the needle tip, the smaller the crochet.
1: The flexural strength is uniform and has the highest stability in all directions of force.
2: Usually less needle breakage;
3: The nearer the needle tip, the smaller the hook prick, the smaller the initial puncture resistance.
1: Especially suitable for needling in feeding area, natural fibers, regenerated fibers and high toughness fibers (such as para-aramid fibers).
1: Aircraft number: 18-43
2: Needle length: 2.5","3","3.5","4","4.5","5"
3: Acupuncture types: KV, RF, FB