https://www.wzcfmachine.com/products/automatic-spiral-coreboard-small-firework-parallel-paper-tube-making-machine.html Automatic Spiral Coreboard Small Firework Parallel Paper Tube Making Machine Model: CFJG-20 Product Performance Paper Layer: 10 Layers Inner Diameter: 20-100mm Wall Thickness: 0.5-5mm Winding Speed: 1-30meters/min (relates to size and material quantity)