The OMNI View Welding Filter Shade 12 by Gentex Optics is a protective plate made of durable polycarbonate material, measuring 2"x 4.25". This welding helmet lens features a mirrored filter/shade with a protection level of 12, ideal for welding and soldering applications. Manufactured in the United States, this unit is designed to provide safety and clarity for welders during their tasks. With its drop-in lens type, this welding protective gear is a reliable accessory for professionals in the industry.