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 ♦ Economic welding filter ♦ Optical class : 1/1/1/2 ♦ With standards of CE,ANSI,CSA,AS/NZS Products details About this item 1, It's a replacement part for 110*90 filter helmet. 2,Internal adjustment 3,TrueColor Technology 4,CE approval 5,Long lifetime with solar panel 6,Economical welding filter