This is a set of AsahiKASEI Saran Wrap cores, 30cm x 50m, 5 cores, and 22cm x 2 cores. These cores are very sturdy. How about using them for handmade crafts, DIY projects, crafts at kindergartens, daycare centers, after-school programs, or as materials for art and craft projects in elementary school? Length: Approximately 30.7cm, 23.2cm Diameter: Inner diameter approximately 2.3cm, Outer diameter approximately 2.7cm When shipping, we will take measures to prevent water damage and will ship via Yu-Packet Post. *Please refrain from purchasing if you are concerned, as these are used wrap cores that have been stored at home by an amateur.