DriMark(R) erasable double highlighter with conical tips. Highlighter on one side, eraser on the other. Erases highlighted areas instantly. Clear solution erases highlights from most papers and works only with highlighter in this product. DriMark(R) erasable highlighters have 3x more ink than imports. Made in the U.S.A. Exclusive Design: U.S. Patent No. D413,925.