Prismacolor-Premier Marker Set. These professional artist markers have an advanced ink formula that provides rich color saturation with smooth, silky ink flow and coverage. Four different line widths available with each double-ended art marker. This package contains seventy-two double-ended markers in assorted colors within one 6-1/2x13x4-3/4 inch box with handle. Non-toxic. Conforms to ASTM D4236. Made in USA.