The Fed Spec Welders Protective Plate CR-39 2 X 4 1/4 Monomer is a designed for welders looking for a durable and high-quality protective gear that will withstand the rigors of welding. The welding helmet provides excellent protection against harmful UV rays and other hazards that welding presents. The helmet is made of high-quality materials that ensure longevity, durability, and reliability. The makers of this helmet have designed it to meet the highest safety standards and ensure that it provides the optimal level of protection. This helmet is perfect for welders looking for a durable and reliable helmet that will protect them while they work.