Super Anchor 30' X-Line with Snaphook, Super Grab Rope Grab and Aluminum Carabiner 4065-30The X Line is a personal fall arrest lifeline with a patented, integral air hose inside our 12 Strand HD Lifeline. The result is a completely integrated system for roofers that reduces rope management issues and tripping hazards. Less rope management means faster roofing, too. Ideal for construction trades using air guns. This is a safety tool for the professional roofer that is looking for the ultimate lifeline system. Can be used in reverse so that