ARCHIVAL QUALITY - Will not yellow and is acid-free and pH neutral LIGHTWEIGHT PRINTMAKING - 70lb, 104gsm weight is perfect for everyday printmaking and practicing techniques IDEAL FOR PRINTING - Ideal for relief lino and linocut printmaking, proofing, and screen printing PRE-CUT SHEETS - Available in 9x12" and 12x18" and 18x24" sizes Speedball Printmaster Paper, 12"X18", 50-Sheets, 70lb, 104gsm for Block and Relief Printing. This paper is a 104 gsm archival paper. It will not yellow and is acid-free and pH neutral. Available in 3 pre-cut sizes.