It was a combined purchase for free shipping, but as a store keeps it embarrassing if it is not needed. It is mainly used to correct soldering of surface mount ICs. I chose a wider than usual, but it is saved because it is a cheap price as a try.
I procured it because it used to be lost. We suck the most part with solder absorber and use it in finishing. It absorbs with no flux with no problem. Wider width is more efficient in terms of price, but in case of low power soldering iron it may be better to narrow a little more in terms of warming. The soldering iron that we are using is 60W.