OEM Tops Letr-Trim perforated writing pads feature a clean tear-out design at the top. Each pad is bound with double-stitched binding for enhanced durability. The sturdy, 60 point chipboard backer provides reliable writing support, making it ideal for use away from your desk. Each letter-size pad contains 100 sheets of heavyweight, 16 lb. paper that resists bleed-through, with three-hole punched sheets that are legal/wide-ruled featuring 11/32 line spacings and a 1-1/4" left margin.