• Discover the perfect tool for math, graphing and note-taking with the Qbasic diamond notebooks. With a 10mm square and 80 high-quality pages, each notebook offers enough space to make accurate diagrams and calculations. The handy size of 210x165mm makes it ideal for use at home, at school or on the road. With 4 vibrant colors in one pack, you'll add not only organization but also a touch of fun to your study or work experience. Trust Qbasic for precision, quality and colorful learning! • Size 21x16.5cm. • 40 sheets - 80 pages. • Four assorted colours. • 70gr chlorine-free bleached paper. • Please note: writing does not contain margins.