Kratos - 7m Length Helixon-S Retractable Wire Rope Fall Arrest Block 7m7m Helixon S Retractable 4. 8mm Wire Rope Fall Arrest Block with Polymer Casing For Vertical & Horizontal Use 7m (286 1520 22). High impact resistant polymer casing. x2 Swivel rotations. Smaller and lighter design. Horizontal and vertical use approved. Complete with swivel snap hook with load indicator at attachment end and karabiner at anchorage end. Equipped with a carrying handle, wire rope brush and a window on the casing which allows easy access