The 3M Speedglas Welding Helmet 9100 FX, with filter 9100XX, 541825 is a high-quality, auto-darkening welding helmet that provides superior protection for your eyes and face. It features a flip-up auto-darkening filter that darkens in 0.1 milliseconds to protect your eyes from the harmful glare of arc welding. The filter also has a wide field of view of 73 mm x 107 mm, so you can see clearly what you're doing. The helmet is also equipped with a side window that provides additional protection for your eyes from sparks and debris. The 9100 FX is also comfortable to wear thanks to its ergonomic headgear and adjustable straps. It is compatible with most 3M Safety Spectacles and 3M Disposable or Reusable Welding Particulate Respirator. Here are some of the key features of the 3M Speedglas Welding Helmet 9100 FX, with filter 9100XX, 541825: Auto-darkening filter that darkens in 0.1 milliseconds to protect your eyes from the harmful glare of arc welding Wide field of view of 73 mm x 107 mm