The 6 Arm Heavy Truck Spider bungee is made out of natural rubber and elastomeric material making these bungees stronger than standard bungees. A center hub distributes the tension of the chain evenly throughout and pulls out the slack which decreases how hard the chain hits the ground. This minimalizes the wear on the steel of the chain so you spend less money on tire chains and more money on the things that matter to you. | Quality Chain Corp 6 Arm Heavy Truck Spider Bungee