3M Speedglas G5-02: 20 years in the making

After over 20 years of research and testing, the world's first curved auto-darkening lens is finally here! Learn how the team at Speedglas were able to create a new world standard for precision viewing with the 3M Speedglas Welding Helmet G5-02! More information: www.apexweldingsafety.com.au