31cm long, 3.2cm diameter cardboard cores from 100 rolls of plastic wrap. Made of sturdy material. The plastic wrap was used normally. Most are clean, but some have minor stains, so I'm including an extra 8 as a bonus. I look forward to your purchase if you understand. (*^^*) ★Please refrain from price negotiations★ ★Instant purchase is welcome★ Can be widely used for crafts, handmade projects, DIY, science projects, packing materials, and educational materials for nurseries and schools. ・Lightly cleaned Due to the large quantity, it's also recommended for event preparations and mass production. #PlasticWrapCore #WrapCore #PaperTube #CraftMaterials #HandmadeMaterials #DIYMaterials #ScienceProject #EducationalMaterials #NurseryCrafts #KindergartenMaterials #SchoolMaterials #ArtClass #BulkSale #LargeSet #Materials