BIC Great Erase Grip Chisel Tip Dry Erase Marker, Black, Dozen Perfect for use on dry erase boards, glass and most non-porous surfaces. The Great Erase tank-style chisel tip dry erase marker features a molded grip zone for added control. After writing, easily erase with a dry cloth, tissue or felt eraser. Low-odor and nontoxic. Marker Type: Dry Erase; Color(s): Black; Tip Type: Chisel; Ink Types: Non-Washable. Molded grip zone for added control. If you are not satisfied with the performance of this product, please return it to BIC and BIC will gladly replace it at no cost to you.BIC