Pentalic - Paper for Pens - Pad - 9x12 - Pentalic Paper for Pens Pads contain archival quality, acid free 109 lb. (178 gsm) premium grade paper that preserves the integrity of ink work, technical and crow quill pen drawing, broad pen, copperplate calligraphy and ink washes. The Pentalic Paper for Pens is an absolutely beautiful sheet that is crisp, bleedproof and ultrasmooth; designed especially for detailed work. This pad is 9 x 12 inches and contains 40 sheets of drawing paper.