K&S has the tolerance down to a science. Mics out perfectly. I have no trouble soldering since there
is no tarnish. The Chinese tubes are a poor second. Forget the imports, this is the only way to go.
Raff
These work great. It is a bad fly year around here and I have 4 different types of traps set out.
These are filling fast and there is no need to add water every few days. They work really well
and I would recommend these strongly.