Welding Len Shade 9 Glass 4-1/4"x 2" Matte Edge Hardened Glass Black Darkening Filter Plates, 4 Pack

Welding lens shade provides a protective layer that allows welder to maintain clear visibility of their workpiece while offering protection against sparks, debris, and splatter.

Advantages
The shade level of a welding lens refers to its ability to filter out specific amounts of light. The higher the shade number, the darker the lens and the more protection it provides. The shade is 7.
The lower numbers are lighter shades for less intensive welding applications, and higher numbers indicate darker shades for more intense welding processes.
The edge of the lens is smooth that prevent scratching your hands

Instruction
Align the lens properly in the lens housing or frame of the welding helmet. It should fit securely without any gaps or misalignment. Once the lens is installed, put on the welding helmet and adjust the fit to ensure it sits comfortably on your head.

Notice
Inspect the lens cover before each use for any signs of wear, damage, or distortion.