Build-A-Bungee Kit has 5/16" stretch cord and comes complete with 3 pair (6 pieces) of black, adjustable, non-scratching hooks for building customized bungee cords. A great replacement for any shock cord or custom application. Great for cargo racks, ATV's, trucks, tarps and more-the uses are endless. The cord can be cut to various lengths or left whole and safely stretches up to 2x its original length.