Our Self-retracting Lifelines (SRL’s & PFL’s) / Self-Retracting Devices (SRD’s) are OSHA and ANSI Z359 compliant. Our SRL’s are ergonomically designed for ease-of-use and are ideal for direct connection to most harnesses. We offer a range of SRL/PFL/SRD that meet Class A, B, leading edge and harsh work environment standards. See categories: Regular SRL’s, Leading Edge SRL’s