Botron designed a lightweight grounding system coil cords 8 ft and 10 ft long made from the finest materials. We can also manufacture other sizes as well. Coil cords provided a reliable path to ground, Meets S1.1 of (one to five pounds breakaway force. Superior strain relief at both ends. One end snaps on to field mat and other end to wrist strap with banana plugs to ground with good coil retention. - Dual light weight coil cords. Spring contact banana connector. Strain relief at banana and snap end. Built-in 1 megohm resistor. 7 strand tinsel wire.