Replacement high heat-resistant outside cover lenses to suit the 3M Speedglas 100 welding helmets.<br><br>FEATURES:<br>- Essential for the care & maintenance of your 3M Speedglas 100 welding helmet<br>- High heat-resistant coating for high amperage, high heat applications<br>- Rated to 205 degrees Vs the standard cover lens rated to 140 degrees<br>- Replace once to twice a week depending on use
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