The 4ft bungee cord docking line can easily install and uninstall your kayaks, motor boats, boats, yachts and other small sea cruise equipment to a dock.The bungee cord hidden inside as a snubber which can"Stretches" when your Boat, Pontoon, PWC, Jet Ski, or Kayak Drifts from Rough Waves or Wind.SPECIFICATION: Diameter : 16mm / 5/8 inchUnstreched Length : Approx. 124cm / 4ftStretches Length : Approx. 170cm / 5.5 ftTensile strength : 2200lbColour:yellowMaterial:glassfiberPackage Contents:2 * Golf Alignment SticksOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.