These were included as packing material when I purchased lighting fixtures. They are sturdy tubes, suitable for DIY projects, children's science projects, etc. ☆ 4 Brown Tubes Diameter: 5 cm, Length: Approximately 28 cm ☆ 1 White Tube Diameter: 8 cm, Length: Approximately 30 cm Slit partway down. For brown tubes only, the price will be 1,500 yen. Set of 6 brown and white paper tubes for packing. - Quantity: Set of 6 - Colors: Brown and White - Material: Paper - Use: For packing Thank you for looking.