The MSA 3104L-00 Latchways LadderLatch attachment device for vertical lifeline kit is designed to connect the user, wearing a full body harness, to a Latchways cable system. This allows for hands-free movement up and down the entire height of the fixed ladder, eliminating the need to disconnect and find new tie-off points while ascending or descending. The Latchways LadderLatch device is the only approved attachment device for use with MSA Latchways vertical ladder kits.