Writing pads feature Letr-Trim perforation at the top for a clean tear-out every time. Binding at the top is double-stitched for added strength. 60 point, rigid chipboard backer provides writing support and durability when away from your desk. Each letter-size pad contains 100 stitched sheets of heavyweight, 16 lb. paper. Each sheet is law-ruled with 11/32" line spacings and a 3" left margin.