TOPS Engineering Computation Pad, 8 1/2 x 11, Green, 100 SheetsGreen tint paper. Squares on both sides. Three-hole punched. 15-lb. paper weight. 5 square inch cross-section ruling printed on back faintly shows through to front. Makes diagramming easier. Front printed with frame margins. Pad Type: Quadrille; Sheet Size: 8 1/2" x 11"; Ruling: Quadrille (5 sq./in.); Number of Sheets per Pad: 100.