50 Sheets, 96gsm acid free paper. Daler-Rowney has a worldwide reputation for the finest papers for drawing, sketching and pastel work. The coarseness or "tooth" of cartridge paper has a direct effect on an image drawn in charcoal or pencil. All Daler-Rowney cartridge papers, available in pads, spirals and attractive hardback books have a specified tooth designed for clarity and definition.