When we're at home, generally we like to use an electric pencil sharpener with our Prismacolor pencils. But sometimes portability is important, and the Faber Castell Grip Trio sharpener works great! With three different holes, it's great for keeping triangular Faber-Castell Jumbo Grip and Art Grip pencils sharp as well as standard graphite pencils, this three-hole sharpener keeps shavings neatly contained in two separate reservoirs.