SnapI have one.
It came with all the stuff I got when I bought my last TIG.
Can't get used to use it. but then again.. cant get used to finger feed either.
the pen is a clever little thing, it's very smooth on feeding the rod... I just can't use it, end up just moving my hand forward.
I'm in a crap situation where I can't finger feed the rod, but can hold it miles away from the end and still keep it very steady.... meaning I can lay quite a substantial length of bead only my moving my hand closer and closer......
it's a bad situation, I have tried to get out of this habit, by forcing to finger feed....but when I notice I'm just moving my hand again.
sorry, I kind of went off on one there! hahaha