For precise writing. Perfect for precise dry erase marking in small spaces. Erases quickly and easily. Contents: 4 Expo ultra fine tip low odor dry erase markers. www.expomarkers.com. Guarantee: If your product does not perform properly, please return for replacement: Newell Rubbermaid Office Products, 3500 Lacey Road, 10th Floor, Downers Grove, Illinois 60515, Attn: Consumer Affairs. ACMI: AP - Art & Creative Materials Institute certified. Conforms to ASTM D-4236. Assembled in USA.