Considered the best selling welding helmet in the industry. Jackson Helmet Features: *narrow shell design is ideal for working in tight spaces *lightweight and comfortable; weighs only 13.8 ounces *increased throat protection because of the extended front *withstands radiant heat up to 350 degrees F, a minimum 50% improvement over most other thermoplastic shells *comes with factory installed shade 10 polycarbonate filter plate and cover plates *Available in three models: HSL-100, HSL-1 or HSL-2.The HSL-100 features a 4-1/2 inch x 5-1/4 inch fixed front. The HSL-1 features a 2 inch x 4-1/4 inch lift front. HSL-2 2" X 4-1/4" Lift Front *Each helmet includes the new 270-S headgear considered the most comfortable headgear available. *Shadow welding helmets may also be ordered with the 187-S cap adapter (mounting blade kit).