A deceptively simple ridged æVÆ groove holds ropes firmly, yet is devoid of any parts to break or seize. It allows the immediate release of the rope by a short upward and backward pull. Line Tensioners lock lines securely and are easy to release. Grips the line to resist being shaken loose - even in extreme conditions. Out-performs all existing plastic guy runners. Easy to rig, push up to tension and secure, pull lines apart to release - easy to use even when wearing thick mitts or gloves.