Medium grid notebooks, 2-pack, durable, designed and manufactured for construction sites. features plastic covers and heavy-duty steel spirals to withstand the toughest conditions. thick cardboard backing keeps the notebook rigid when writing standing up on the job site. grid pages are perfect for taking notes or sketching plans. the medium size is convenient for carrying in a back pocket, so it's always handy. for maximum organization on the job site, combine these medium grid notebooks with the toughbuilt tb-56-mc medium organizer (231 x 94 mm).