3M 541805 Welding Helmet 9100FX (9100V Auto-Darkening Lens). Features: Can be locked in open position, for example, during grinding. The delay function adjusts the time to transition from dark to light. Arc detection sensitivity can be adjusted as desired. Temporary welding comfort mode prevents eye strain during long temporary welding applications. Speedglas™ 9100 FX auto-darkening protection with a high-impact grinding visor that folds. Smooth folding function reveals a 17x10cm protective visor. Three viewing areas available. Seven adjustable dark shades. Includes the 3M™ Speedglas™ 9100V welding filter. Suitable for most arc welding types. Recommended for low light conditions or precision welding prep. Recommended industries: Metalworking.