The 3M Speedglas 9000 Outer Lens 426000 is a replacement outer lens for the 3M Speedglas 9000 welding helmet. It is made of high-quality materials and is designed to protect the welding filter from sparks and spatter. The lens is also scratch-resistant and easy to clean. The 3M Speedglas 9000 Outer Lens 426000 is an essential part of any welding helmet. It helps to protect the welding filter and ensure that the user has clear vision while welding. The lens is also available in a variety of colors to match the user's preference. Here are some of the benefits of using the 3M Speedglas 9000 Outer Lens 426000: Protects the welding filter from sparks and spatter Scratch-resistant Easy to clean Available in a variety of colors