Description Auto Darkening welding filter is the spare part of welding helmet to protect your eyes and face from sparks, spatter, and harmful radiation under normal welding conditions. Auto-darkening Filter automatically changes from a clear state to a dark state when an arc is struck, and it returns to the clear state when welding stops. Features ♦ Expert welding filter ♦ Optical class : 1/1/1/1 ♦ Digital adjustment ♦ Welding& Grinding& Cutting ♦ With standards of CE,ANSI,CSA,AS/NZS Products details