Excellent durability!! 6" metal barrel is perfect for the manufacturing environment. Can't crack, melt or break. Leak-proof, seamless metal body, heavy-duty chisel felt-tip with anchored nib construction. Permanent, instant drying ink and fade resistant on glass, plastic, metals, cellophane, paper, etc. Sold by each. Quantity break available if bought in boxes of 12. Only available in Red, Green, Black and Blue. Other colors shown have been discontinued. $1.35, 12/$13.80Color: 87110 Red87140 Green87170 Black87180 Blue Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.