This graph paper size of 8.5" x 11", 4"x4" blue quad rule, double side clear blue grid. This graph filler paper with 100 sheets/200 pages for 200 days, improve your productivity with this daily organizer. Loose leaf grid paper for compatible with Staples Arc, Office Depot TUL, Talia, Levenger, Happy Planner, and other 11 discs letter size discbound notebooks. Refill grid paper is used to high quality 100gsm pure white premium acid-free paper, so you can confidently use most pens, pencils, and markers without ghosting and bleed-through. Use for engineering or technical drawings, drafting, drawing blueprints, crafting, or creative drawings. Standard 4 x 4 graph-ruled paper is a staple for elementary math, geometry, calculus, trigonometry, physics, and the arts.