The product is a set of Brand New 20 JJunLiM universal welding helmet lenses made of polycarbonate BW5852. The lenses measure 5.25" x 4.5" and are clear in color. 
They are designed to provide protection for welding helmets and are suitable for various welding applications. Made of durable polycarbonate material, these lenses are essential for ensuring the safety and well-being of welders in industrial settings.