Art Stix measure 3.25 inches x .25 inch x .25 inch (82mm x 6mm x 6mm) and are a woodless, stick version of the waxy leads in Prismacolor Premier colored pencils. Used on their side, they're great for laying down lots of colour quickly. Sharpened, they can be used for more detailed work.
If using Art Stix in conjunction with Prismacolor Premier pencils, see the list of colour code equivalencies:
Goldenrod #2034 is equivalent to Prismacolor pencil #1034
Light Blue #1904 is equivalent to Prismacolor pencil #904
Scarlet Lake #1922 is equivalent to Prismacolor pencil #922
Indigo Blue #1901 is equivalent to Prismacolor pencil #901
True Blue #1903 is equivalent to Prismacolor pencil #903
Canary Yellow #1916 is equivalent to Prismacolor pencil #916
Crimson Red #1924 is equivalent to Prismacolor pencil #924
Pink #1929 is equivalent to Prismacolor pencil #929
Black #1935 is equivalent to Prismacolor pencil #935
White #1938 is equivalent to Prismacolor pencil #938
Peach #1939 is equivalent to Prismacolor pencil #939
Sienna Brown #1945 is equivalent to Prismacolor pencil #945
Dark Brown #1946 is equivalent to Prismacolor pencil #946
