50 lb. sulphite paper is ink-coated on one side so colors won't fade. The options are limitless with Fadeless® Paper--its bold, vibrant colors and acid free, fade-resistant qualities make it last for long periods of time, so your bulletin boards and displays can stay up all year! Its durable construction makes it suitable for many arts and crafts projects. It is strong for folding, cuts cleanly, and will not crack. The core size is 1" and will work easily on racks that have 0.5" or 0.75" dowels. Rolls measure 50'L x 48"W.