Nikro 861715, Flexible Lead Line Button Lock Male X Button Lock Female Connection with 13 Inch spring in the middle 15" Long over all length. Sold each, one per order (photo shows 2 but 1 per order.) Warranty void if you run past 320 RPM. Best to use a clutched drill. Flexible Lead Line Attaches to #861275 4' Locking Nylon Rods