The dimensions of the box are as follows; Closed: 9 1/2" x 4" x 7/8", open: 9 1/2" x 12".  Each box comes with 15 mixing wells. There are three mixing areas on the lid as well as a removable mixing area next to the thumb hole. There is a large mixing area on the flap.  The mixing areas and the paint wells are each double primed with epoxy primer and finished with a durable industrial topcoat. The natural brass finish is first sanded with 220 grit followed by 600 and finished with 1000 grit sand paper.  All interior corners are sand blasted and chemically cleaned. The final polish is with a buffing wheel utilizing three different polish grades.  The exterior is then coated with an anti tarnish compound and final polished with 3M's Tarni-Shield.  Included with each box is a quality cloth bag with drawstring.