10-PC. 12MM. X 18" BUNGEE CORD SET, #BGC1218-10 Packs of 100pcs Bungee Ball Cord in White Color. They are 6" in length. Quick and simple to use. Long lasting rubber Feed the elasticized loop through the tarp grommet and wrap around the ball Plastic toggle balls on either end of the cord. It's ideal for stretching tarps on canopy frame High quality cord with extra stretch that makes them easier to attach and remove