The product is a set of 8 engineer's computation pads, each containing 400 sheets and measuring 8.5x11 inches. These pads are designed for detailed calculations and note-taking in engineering or mathematical contexts. With a total of 3200 sheets in this set, users have ample space for solving complex problems and recording their work. The size of the sheets provides a convenient and practical layout for precise computations and diagrams. Ideal for professionals in engineering or industrial settings, these computation pads offer reliability and functionality for everyday tasks.