CRAYOLA-Marker Maker Refill Kit. Reload your marker maker with more custom markers! Keep your marker colors flowing with this convenient refill pack. It includes everything you need to mix; measure and click together twelve custom markers. This package contains two marker boxes; three ink markers (red; blue and yellow); twelve barrels; plugs and caps; twelve cores and tips and twelve marker labels. For ages 8 and up. WARNING: Choking Hazard- small parts. Not for children under 3 years. Non-toxic. Conforms to ASTM D 4236. Imported.