3dRose db_184996_1 Best Engineer Ever-Fun Gift for Engineering Job-Black Text-Drawing Book, 8 by 8-Inch 8 x 8 inches spiral bound hard covered 9/16 inch twin loop wire binding spine 50 pages, 8 x 7.75 Inches - page thickness is 80lb text Acid free blank bright white non-coated paper Pages lay flat when book is opened