Previously I was using Decaline, but since I lost it at the work site, I have come back because it may come back, so I bought 3 mm of unchanged thread thickness with cheap thing. There are no problems at all, on the contrary the smaller one is easier to store and easier to carry. Although the number of meters shrunk, I think that it will not be a problem unless it is a big site. Since choke powder is not included, it is necessary to have Takumi's outdoor powder chalk sold separately. This also contains titanium, so it was not inferior to those of Decaline.