Twin retractable block typically consists of two separate retractable mechanisms housed in a common frame or casing. Each retractable mechanism operates independently but is designed to work in tandem, ensuring synchronized movement of the load-bearing elements
The use of two retractable blocks in a twin configuration provides increased load capacity compared to a single block. The load is distributed between the two blocks, allowing for lifting or lowering heavier objects safely
Also it's important to note that the specific features and capabilities of self-retracting lifelines may vary depending on the model, manufacturer and intended use. When electing and using an SRL, it is crucial to follow the manufacturer's instructions, conduct proper training and adhere to applicable safety standards and regulations
