With the benefit of a gold coating which reflects up to 99% of infrared light, reducing the temperature inside the helmet. A cooler, more comfortable welder will stay on the job longer and produce more. Straight Cut / Grinded Edging Standard / Hardened (Heat Treated)Shade No. From 9 to 14. Thickness: 3.0 mmSize:2"x4-1/4"4-1/2"x 5-1/4"165× 110133× 144120× 100110× 90110× 80110× 60110× 55108× 83108× 51105× 5098× 75Round 50MM etc.
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