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. Sturdy, 60 point chipboard backer provides writing support and durability when away from your desk. Each letter-size pad contains 100 sheets of heavyweight, 15 lb. paper that resists bleed-through. Each sheet is three-hole punched and legal/wide-ruled with 11/32" line spacings and a 1-1/4" left margin.