Work great.They were too thick in diameter for my particular Weller soldering iron, but I just drilled my soldering iron prongs internal diameter a couple sizes wider to accommodate and it worked great.If you are concerned about making adjustments to your soldering iron, then DONT and double check your model for the specific correct part. I thought it was worth it, due to the price of the specific replacement vs this product I'm reviewing which I can now always cheaply reorder.
Rating:
[5 of 5 Stars!]