This set of 9" black ball bungee ties from Canopies and Tarps includes 50 pieces. Use these ball bungee cords for tarps to quickly and easily secure your tarp to a canopy frame. Simply push the elastic through the grommet, loop around the frame and snap over the plastic ball to hold in place. Each bungee ball tie can stretch to 12.5". 1/5-inch cord diameter (5mm), relaxed length including ball is 9-inches.