Lightweight welding helmet with 50x108mm Flip-up lens. , Unique straight shell, impact resistant and durable. , Ratchet adjustment type suspension.Materials, Shell: Vulcan fibre, Glass holder: Polyamide. Excellent dimensional stability under heat. No dripping off or residual burning of shell in contact with heat. Radiation heat resistance up to 180°C. Cover lens: Mineral glass, Welding lens: Mineral glass shade 10. Chipping lens: Polycarbonate