They are photographed on an imperial inch mat so you can see exactly what size they are, they are 2.5"x3", when I made them I aimed for 10 sheets each and added more as I had them cut out and was able to add and still firmly attach the booklets together (that mostly depended on the cover paper)...so a minimum of 10 sheets, most have more. The writing utensil, as stated, is a pencil; regular grey/black pencil graphite. They ade 3+".