3M DBI-SALA Ultra-Lok 3504431 Fall Protection Self Retracting Lifeline, 30' 3/16" Stainless Steel Cable with Swivel Snap Hook, Blue Maintains a reserve for shock absorption when the entire lifeline is extended for added safety Compact and durable housing is easy to use, transport, store and is built to last A gasket between the housing halves helps prevent contaminants from entering, extending the life of the device The motor spring, fasteners, locking pawls, shaft, springs and rachet plate are stainless steel for added corrosion resistance to extend the life of the device 30 ft (91m) of 3/16" (5mm) stainless steel wire rope with swivel snap hook 30-foot stainless steel cable Stainless steel working components for corrosion resistance Reserve lifeline retention system for added safety Swiveling anchorage loop to prevent twisting of lifeline 3600 pound gated hooks