Suitable for most arc welding processes, this 3M Speedglas 100 welding mask features an auto-darkening lens which adjusts to the relevant shade within an impressive 0.1 milliseconds. Engineered to provide comfortable personal protection, this face shield also features an ergonomically designed head harness that can be easily adjusted to find the ideal fit. Learn more… • Speedglas 100 welding helmet with variable 100V auto-darkening lens (shades 8-12) • Possible to lock in the light shade when grinding • Delay function to set dark-to-light opening time • Three sensitivity levels • Head harness with smooth ratchet for a customised fit • Suitable for most arc welding processes including MMA, MIG/MAG and high-amp TIG welding • Switching time (light-dark): 0.1ms at 23°C • Switching time (dark-light) 40-250ms • Viewing area: 44mm x 93mm • Battery life: 1500 hours • Compatible with most 3M disposable respirators Get technical… EN 175 B EN 379 EN 166:2001 BT Specification Colour Primary Base Colour Black Secondary Base Colour Options Black Secondary Base Colour Black Primary Base Colour Options Black Vendor Merchandising Colour Black Features Adjustable ratchet movement true Anti-mist coating false Anti-scratch coating false Lens adjustment Auto Darkening Search Material Glass Fibre,Other