Fireworks Mortar Rack Vertical 10 Shot With 1.75" Fiberglass Tubes Included Fireworks Mortar Rack Vertical 10 Shot With 1.75" Tubes Included 1.91" I.D. Tubes Suitable for any 1.75" firework ball or canister shell. Tubes are 12.5" Length Overall Easy Twist Kickstand For Stability. FREE SHIPPING WITHIN THE U.S. ! NO FIREWORKS ARE INCLUDED. THESE CONTAIN ONLY FIBERGLASS AND WOOD.