This is a listing for six cores from New Krewrap Regular 30cm x 50m. The size is approximately 30.9cm in length x 2.9cm in diameter x 0.2cm in thickness. They are made of paper but are quite sturdy. There are no noticeable scratches or stains. How about using them as materials for handicrafts? They will be shipped in a brown envelope. Please comment if you have any questions. Material: Paper Color: White