Features 1. Lens Protection: These replacement lenses can replace broken or worn lenses and protect them by placing them in front of the auto-darkening lens. 2. Crush Resistance: These lenses are highly resistant to compression and drops. They are robust and not easily damaged, making them ideal for industrial welding work. 3. PC Material: Made of polycarbonate, these lenses offer high strength and modulus of elasticity, high impact resistance, good fatigue resistance, good dimensional stability, and high transparency. 4. Outer and Inner Lens Sets: The kit includes 3 circular outer shields and 2 inner shields, to meet your needs and allow you to use them yourself. 5. Robust and durable: Polycarbonate provides optimal safety and durability, and the lenses made of it have a long lifespan. Specifications Item Type: Large Viewing Screen Replacement Lens Material: PC Specifications: Circular Outer Screen Length: Approx. 34cm / 13.4in Inner Screen: Approx. 105.3 x 65.8mm / 4.1 x 2.6in