Good quality copper tips, for tin welder, meet the promised, the inner measurement is 3,85mm. And it's lined with a different metal shirt. After testing it, I have to say the result is satisfactory, so I recommend

Got it earlier than expected. It's like the description. All tips as in the photo. Looks like copper. In the process of operation I will try to complement the review.

Product received, fast delivery, good attention from the seller, I will follow the seller, in short... highly recommended product and seller.

Received all ok, everything matches what is described in the publication and visual inspection, lack to test them to see the quality. Thanks

3 weeks in Rostov. Like copper. The soldering machine from me is so itself, so I can not say whether it's good or not.