These Sealed SRLs incorporate a patented concept that separates all dynamic components including the motor spring and brake, from foreign elements such as grease, moisture and dirt. You can always trust your SRL to work at peak efficiency without worrying about the environment you're working in.
 
 Available OSHA/ANSI Models:
 
 3403600: Sealed-Blok™ 130 ft (39m) Self Retracting Lifeline with Galvanized Cable Assembly, Galvanized Snap Hook and 310 lb (140.9 kg) Weight Capacity
 3403602: Sealed-Blok™ 130 ft (39m) Self Retracting Lifeline with Galvanized Cable Assembly, Galvanized Snap Hook, 310 lb (140.9 kg) Weight Capacity and Retrieval Winch

For more in formation please visit:

http://www.magusintl.com/ppe/ViewProductDetails.asp?ProductID=1646&aID=Fall%20Protection&L=1&CategoryID=343&CN=Self%20Retracting%20Life%20Lines