Tops Business Forms Engineering Computation Pads,5"x5" Rld,100 Sh,8-1/2"x11",GN Computation pad contains 100 sheets of 15 lb. paper with a five -square -per -inch , cross-section ruling printed on back. Ruling faintly shows through to the front. Design makes diagramming easier. Front is printed with frame margins. Three-hole punched pad has holes drilled in the left margin to fit in three-ring binders.