This letter size graph paper (8.5 x 11 inches) is designed for users who want durable, high-quality refills for standard 3-ring binders. Each sheet is 3-hole punched for easy organization in binders used at school, in offices, or at home. Made from 120 GSM premium paper, these sheets are thicker and more durable than standard notebook or copy paper. The heavier weight reduces ink bleed-through and ghosting while maintaining a smooth surface suitable for writing, sketching, and light printing. The quad ruled graph layout supports a wide range of applications, including math homework, engineering and technical notes, charts, graphs, diagrams, drafting, planning, and design work. With 200 sheets per pack, this set provides long-lasting value for high-use environments. Ideal for students, educators, engineers, designers, architects, and professionals, this graph paper refill delivers consistency, durability, and organization in a familiar 3-ring binder format.