Part Number: 231921, ensuring compatibility with Miller Performance Series welding helmets. High-Quality Materials: Made from heat-resistant and long-lasting materials to withstand tough welding environments. 5-Pack Value: Includes five replacement lens covers, offering convenience and cost-effectiveness. Essential Accessory: Ideal for professional welders and DIY users to keep their welding helmets in peak condition. Keep your Miller Performance Series welding helmet in top condition with the 231921 Front Lens Cover. Designed to provide superior protection and durability, this lens cover shields your welding helmet’s lens from sparks, debris, and scratches while maintaining a clear view for precise welding tasks. This 5-pack ensures you always have spares, making it perfect for professional welders and DIY enthusiasts alike.