The Jackson® Safety HSL-1 Passive Welding Helmet is ideal for students, hobbyists, and inspectors, the HSL-1 passive welding helmet features a narrow shell design and is perfect for welding in tight spaces. The helmet features a 4.25" x 2" viewing area and can accommodate the Jackson(R) Safety Solera II (SKU # 16376) drop-in ADF (sold separately). Narrow shell design is perfect for work in tight spaces Extended front increases throat protection from sparks, slag, and other physical hazards Exclusive 370 Speed Dial headgear provides a perfect fit every time while increasing safety and productivity Comes equipped with a shade 10 polycarbonate filter Hard hat adaptable using model 187-S (15968)