HSL-100 series passive welding helmets feature Jackson Safety's legendary HSL Shadow design for work in tight spaces and exclusive 370° Speed Dial, which offers the fastest, easiest, and most efficient ratcheting headgear system in the industry today. Features a narrow shell design that's perfect for work in tight spaces Extended front increases neck protection from sparks, slag, fumes and other physical hazards Exclusive 370 Speed Dial™ ratcheting headgear system provides unsurpassed comfort, convenience, and productivity Includes 4.5" x 5.25" shade 10 polycarbonate filter Hard hat adaptable using product number 15968