This product is a set of three lens lot Gold #11 hardened glass filter plates, measuring 2" x 4.25" each. The lenses are manufactured by BEST WELDS and sourced from China. They are designed for welding helmets and offer protection for welders during the welding process. The gold color of the lenses indicates the specific shade of protection, making them suitable for various welding applications. The high-quality materials and craftsmanship ensure durability and effectiveness in shielding against sparks and radiation.