D623403600 / 3403600 LIFELINE 130' SELF RETRACTABLE Sealed Self-Retracting Lifeline Sealed SRL has a corrosion-resistant cast aluminum/stainless steel housing. It separates all dynamic components, including the motor spring and self-adjusting disc brake, from foreign elements such as grease, moisture and dirt. The 3/16" galvanized steel wire rope, in choice of three lengths, features a self-locking swivel snap hook with impact indicator.