Fits all Buddy Lee Jump Ropes (except the Super Sonic and Super 20 TPS) Change up the look of your jump rope with some different colors! For replacing broken cords For children that have outgrown their cord For trainers looking to train clients of different heights with the same jump rope The cords are approx 9’5″ long and made of PVC, a very durable material that is recommended for wood, rubberized, artificial turf and sport court surfaces. They can be used on cement surfaces but will wear and break quicker due to excessive friction. Note: The white cords and a little bit lighter and are not hollow. Use a pushpin to initiate a hole in the end of cord, before easily screwing the eye screw into the cord.