Certified glasses for round glass welders DIN 6 levels of dimming, 50 mm in diameter, 2.6 mm in thickness and optical class 1. They are very comfortable, with additional side fixers that allow for excellent positioning on the face without the possibility of falling off. On fixators there is indirect ventilation and also serve as protection from side impacts. Glasses are made of quality plastic material of good finishing, without sharp edges that would irritate the face. The two parts of the frame are screwed in with a screw, which is easily discarded to replace the glass, which can be ordered separately. The handles can be adjusted lengthwise. Weighs only 80 grams. They are used mostly for gas welding.