Each bungee cord measures 3/16"" (4.5mm) in diameter and has an attached black plastic ball measuring 1 1/8"" (28mm) in diameter. Set includes 50 ball bungees. Easy to use, quick to install. Just feed the elastic loop through a grommet until the plastic ball is flush, then attach the loop to a fixed point to secure a tarp. Great for securing textile on the butterfly frame, cables, stands, hoses, camping and tying down tarps and shades, etc. Elastic cord design allows for stretching and variations in length from 6""up to 8""..