Kratos - 6m Length Helixon Retractable Webbing Fall Arrest Block - Vertical Use 6m6m Length Helixon Retractable 25mm Webbing Fall Arrest Block with Polymer Casing Vertical Use Only Length 6m (286 1520 46). High impact resistant polymer casing. x2 Swivel rotations. Smaller and lighter design, only 2. 21kg in weight. This Kratos Helixon Fall Arrest Block is approved for Vertical use only. For models approved for Vertical and Horizontal Use see the Helixon S models. Complete with swivel snap hook with load indicator at attachment end