The BOC magnification lens fits into all standard 108 x 51 mm welding helmets and handshields
BOC Welding Helmet Magnifying Lens
BOC magnifying lenses are manufactured from polycarbonate and fit standard 108 x 51mm welding helmets and handshields to greatly assist the welder while working. Magnifying lenses are used to produce a magnified image. The higher the diopter, the stronger the magnification.
Standard: AS/NZS 1338.1
1.50 Diopter, 2.00 Diopter, 2.50 Diopter