NATIONAL Brand Computation Pad, Plain & 5 X 5 Quad On Back, Green Paper, 8.5 x 11" 200 Sheets (42389) Go to amazon.com Related posts Top 15 best engineering pad: Which is the best one in 2022? FeatureComputation pad200 sheetsMargin ruled on front, 5 x 5 quad ruled on back3-hole punchedGreen Eye-Ease paper DescriptionSpiral-bound engineering and science notebook. White rigid cover. 50 sheets. 4 x 4 quad ruled. White paper with blue ruling.