Three-hole punched. 31 lines per sheet. Heavyweight 20-lb. bond. 50 sheets per pad. Pad Type: Data; Sheet Size: 11 x 8 1/2; Ruling: Column; Number of Sheets per Pad: 50. 8-1/2 x 11; Accounting; Budget Pad; Computation; Computation Pad; Cross Section; Cross Section Pads; Data; Data Pad; Drafting/Drawing; Engineer's Computation Pads; Engineering; Engineering Computation Pad; Graph Paper; Graph/Grid; Grid; Left Punched; Pad; Pads; Quadrille; Quadrille Paper; Quadrille Ruled; Quadrille Ruled Pad; Quadrille Ruled Pads; Sheets & Pads; Spreadsheets; Three-Hole Punched; TOPS; Tablets; Booklets; Schools; Education; Classrooms; Students