Sealed-Blok™ 50ft (15m) Self Retracting Lifelines with RSQ™ Dual Mode Rescue Operation No other brand has the exclusive DBI-SALA™ dual-mode descent operation! Our RSQ™ feature allows the user, prior to connection, to choose their mode of operation. This two-in-one operation lowers the cost of ownership by reducing the need for separate rescue equipment. Available OSHA/ANSI Models: 3400940: Sealed-Blok™ 50ft (15m) Self Retracting Lifeline with RSQ™ Dual Mode Rescue Operation with Galvanized Cable, Steel Snap Hook, 310 lb (140.9 kg) Weight Capacity and Retrieval Winch 3400930: Sealed-Blok™ 50ft (15m) Self Retracting Lifeline with RSQ™ Dual Mode Rescue Operation with Galvanized Cable, Steel Snap Hook, 310 lb (140.9 kg) Weight Capacity, Mounting Bracket 3400942: Sealed-Blok™ 50ft (15m) Self Retracting Lifeline with RSQ™ Dual Mode Rescue Operation with Stainless Steel Cable, Stainless Steel Snap Hook, 310 lb (140.9 kg) Weight Capacity and Retrieval Winch