Since it is not "non flammable," there are cases that the carbide part opens up some holes. Since it has special fireproof treatment, color reproducibility is difficult and there are cases where the top and bottom colors differ.
I feel bold. I think that it says a little narrower. There is no hindrance to the welding in the standing state, but in the case of narrow place or moving around, the circumference of the sleeve gets stiff and caught here and there. Will not it be smart a bit more?