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 ♦ Extra large view sight ♦ Welding& Grinding& Cutting ♦ With standards of CE,ANSI,CSA,AS/NZS Products details About this item 1,This auto-darkening welding filter is a large replacement cartridge part for 114*133 filter helmet. 2,External or Internal adjustable knob for the delay, sensitivity and shade as the picture, you have the choices. 3,TrueColor Technology to offer you large clear view sight. 4,CE EN379,ANSI Z87.1 CAN/CSA Z94.3 AS/NZS1337.1 approval, 2 YEAR WARRANTY 5,Long lifetime with solar panel and replaceable CR2450 battery. 6,High performance with 1/1/1/1 optical class, you deserve it.