LINED PAPER - pre perforated mushroom buckle system, 8-hole disc-shaped supplementary paper, size 5.6 "x 8.3", blank pages provide maximum creative freedom for writing PREMIUM PAPER QUALITY‌ - 100gsm high-quality paper, optimized for pens, gel pens and highlighters. The smooth surface ensures no ghosting, making it an ideal choice for double-sided writing 100 SHEETS - Disc paper refill with 100 sheets/200 pages, improve your productivity with this daily organizer，Compatible with Mosa Bear，Staples Arc，Office Depot TUL，TaJia，Levenger，Happy Planner，and other 11 discs letter size discbound notebooks DURABLE AND LONG-LASTING - This product endows paper with excellent wear resistance and weather resistance, ensuring that the product maintains excellent quality during long-term use. From raw material selection to production process, every step is strictly controlled, and the final product can meet both daily high-intensity writing needs and professional durability standards for archiving PORTABLE AND PRACTICAL - Fits seamlessly into backpacks or bags. Pre-punched holes ensure easy insertion/removal, making it Suitable for meeting minutes, daily planner, project notebook, journal for school, office and home