Sharpie 37001 Permanent Markers, Ultra Fine Point, Black, 12 Count These porous marker pens work well for precise jobs like labeling or addressing envelopes. The extra precise, 0.2mm narrowed tip provides extreme control and accuracy. Fast drying, smear-proof, fade- and water-resistant ink is AP certified nontoxic. Contains 12 pens. 5.5 inches long by 1 inch wide by 3 inches high. 0.4 pounds. Made in the USA.