Small grid notebooks, 3 units, heavy-duty pads designed and manufactured for construction sites, plastic covers and heavy-duty steel spirals that withstand the toughest conditions, grid pages for taking notes or sketching plans, conveniently sized to carry in pockets, fanny packs or bags, fit perfectly in the tb-33 smartphone case, the tb-ct-25x tape measure/cutter case and many other toughbuilt cases, 99 x 51 mm