Self Retracting Lifeline 330lbs Fall Arrester Fall Protection with Alloy Steel Hook & Steel Wire Rope 23ft (7m) Double Brake System: Dual Swivels Included On All Cable Models To Minimize Lifeline From Twisting During Use. Stable Locking, More Safe And Reliable. Fall Arrester Can Quickly Brake And Lock Falling Objects Within a Limited Distance (≤8in/0.2m ). Material: Aluminium Alloy Inner Shell & Plastics Outer Shell; Alloy Steel Connector; Aviation Grade Steel Wire Rope Is Adopted, With Multiple Strands And Stronger Pulling Force. Self-Locking Hook:Self Locking Hook Keeps The Self Retracting Lifeline Securely Attached To The Anchorage Device. Safety: This Self Retracting Lifeline Has High Sensitivity, Good Reliability, Simple Configuration And Easy To Test, Which Can Availabl.