Werner AutoCoil self retracting lifelines provide safe, reliable protection for workers while also allowing for more freedom of movement around the jobsite. The lifeline extends and retracts automatically during typical use, but a brake activates in the event of a fall, stopping the worker in a short distance while limiting fall arrest forces. These new designs and advanced materials are among the most advanced retractables in the market, combining lightweight construction and ease of use with industrial strength and durability. Sealed internal mechanism prevents contamination and degradation of brake performance. The impact resistant polymer housing protects the internal mechanism and withstands the harshest conditions, and the modular design helps performance and allows for easier servicing and inspection to reduce downtime and maintenance costs. Swiveling forged aluminum snaphooks have a clearly visible impact indicator, and reduce twisting of the lifeline during use. Webbing lifeline leads to an especially lightweight solution.