They are not that good. A friend broke a tip already. They have a
double, very fragile tip and you have to bridge the two with metal to
make the connection.

Homer

Yeah, and watch out for the freezer burns if you touch the tip....man do
they sting!. I see you've got the double tip job, left hand screw right tip
and the right hand screw left tip!, excellent. Did you also purchase the
liquid nitrogen cored solder? I hear there's a special offer on it just now
with a price freeze nationwide.

Duhnse