Petzl CONTROL 12.5mm Low Stretch High Strength Excellent Handling Tree Care Kernmantle Rope 35m-60mThe CONTROL 12. 5 mm low stretch kernmantle rope is designed for tree care. The large diameter ensures high strength and excellent grip. The EverFlex technology guarantees great flexibility and handling over time. It comes with a splice at one end for optimal rope glide through devices like a friction saver or pulley, and through tree branches. The small size of the splice allows it to pass through the friction chain of the ZIGZAG and ZIGZAG PLUS