No.2 pencils are widely used, but you may not know what the number actually refers to. This video explains how pencils developed into their modern form and the significance of the labeled numbers.

ColorWare charges $215 for one of the new Crayon Pencils, which is something of a bargain over the non-Pro Number 2 Pencil, which also sells for $215 but is a mod of the cheaper 2nd-gen Pencil.