These glass beads are installed in your Model T or Model A inner tubes to improve handling and reduce tire wear. We recommend the 4 oz. for any T or A with wire wheels and the 6 oz for any Model T with wooden wheels or any 1-ton T or A trucks.
The Kit includes enough beads for 4 tires and a bottle/hose to install the beads through the valve stem of the tube.
Individual bags are available for spare tires and fine tuning your other 4 tires.