Vevor Welding Lens True Color Auto-Darkening 4.25" x 2" Shade 10 NewThis auto darkening welding lens features Shade 10 protection with true color technology for a clearer, more natural view while welding. Dual arc sensors respond quickly to harmful light to help reduce glare and eye strain. Its gold coated surface is designed for durability and improved visibility. The 4. 25" x 2" format fits most standard welding helmets and shields. It is suitable for TIG, MIG, MMA, and ARC applications.