Hot Max 25030 2-Inch by 4 1/4-Inch Lens Fixed Front Brazing Goggles, 5 Shade Fixed Front Brazing Goggles Goggles come with a No 5 shade len which protects the welder from infrared rays given off during gas welding, cutting, burning, and brazing (not suitable for arc welding) Goggle lens is 2-Inch x 4 1/4-Inch Made from lightweight, durable soft vinyl that molds to the face to protect the welder from any flashover