When it comes to guaranteeing archival standards for photos and fine art reproduction, the Hahnemühle Photo Rag® Brt Wht 310 gsm 44 x 39 3-inch core roll is a reliable choice for every professional artist. You can also use this roll for presentations, exhibitions, limited-edition content, albums, and greeting cards. It has a thickness of 0.5 mm, a whiteness of 99.5%, an opacity of 99.0%, and a moderate amount of OBA content. Also, this calcium carbonate-buffered roll is made from 100% pure cotton, which is free from acid and resistant to water so that it dries up instantly.