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
Comes standard in a pack of 10 (plate marking 420100)
High-heat cover lenses also available (part number 427071)
Lens size 159 x 96mm.