Pack of ten hard-coated outside cover plates (part number 427000) for the 3M™ Speedglas™ Welding Helmet Series 9000 and 9002.

Scratch-resistant Speedglas™ outside plates have a hard coating that protects against scratches, wear and tear
Hard coated cover lenses last around twice as long as the standard cover lenses
Replace hard coated cover lenses once a fortnight depending on use
Cover lenses suitable for the new Speedglas 9002NC
High-heat cover lenses also available (part number 427071)
Lens size 159 x 96mm.