OEM specifications for optimum moisture content. 20 lb bond paper CAD ink jet rolls 2" core size. Untaped / 4 rolls per carton Our engineering rolls go through a rigorous inspection and approval process which meets or exceeds OEM specifications for optimum moisture content. Sheets are lint free and protectively sealed in a moisture protective wrap for long term storage. The use of high quality paper produces crisp, vivid images that are easily readable and longer lasting. Our top quality engineering rolls and sheets are straight and even for a quality print the first time.