BIOT anthracite-coloured anthracite body made of non-flammable heat-resistant material Termotrek; attachment to the helmet with special universal adapters (included), fixed in two most advantageous positions: working (at the bottom) and non-working (at the top). The size of the visible area 110x90mm; light filter made of mineral glass with a degree of darkening 14; panoramic cover glass and backing made of polycarbonate.
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