Excalibur Artillery Shells comes with 24 of the best quality canister shells on the market and bundled with 4 high-density polyethylene (HDPE) tubes. This by far the 1# seller on the market! Excalibur artillery is made to be the best starting with there custom one piece (HDPE) tube that ensures it lifts to the perfect height of over 250 ft. Plus these reloadable artillery shells are also patented massive shells that break over 200 ft. wide in to vibrant ray's of colors and effects. So take hold of Excalibur from World Class Fireworks and experience the 1# one selling legend first hand. Each case includes 4 packs of 24 shells.