Optimal Size for Enhanced Visibility: Each lens in this 3-piece set measures 3.54 inch x 4.25 inch, designed to fit seamlessly into a wide range of large welding helmets, ensuring broad compatibility and easy installation for professional and amateur welders alike. Enhanced Magnification for Precision Work: Featuring a 2.5 magnification, these lenses enhance your vision during intricate welding tasks, allowing for greater accuracy and reducing eye strain during long hours of work. Crafted from Superior Optical Grade Acrylic: Constructed from high-quality optical grade acrylic, these lenses offer exceptional clarity and durability, resisting scratches and impacts to maintain visibility and protection. Universal Compatibility with Major Helmet : Designed to be versatile, these lenses are compatible with most large welding helmets available on the market, making them a perfect upgrade or replacement for your existing welding gear. note: The actual product may have slight color difference or difference, which not affect the use Colour: Transparent Material:PC size: about 108x90MM Package Contents: 3 x Magnification Welding Lens Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.