MSA - Latchways Leading Edge SRL
The Latchways Leading Edge Retractable Lanyard range offers a dependable means of fall protection for leading & sharp edge and overhead use. Specifically designed for use in a number of different leading & sharp edge applications, the Latchways Leading Edge self-retracting lifeline utilizes modern engineering and innovative design, they are the most advanced leading edge self-retracting lifelines available.

SOURCE:
http://ae.msasafety.com/p/000460000400001006