One-piece stick pens are made from solid, shatterproof plastic with no small parts or springs. The unique, hexagonal design minimizes the risk of the pen rolling. These pens are designed for use in food and pharmaceutical industries where metal detection or x-ray machines are used in support of quality control and to prevent foreign-object contamination. Sold in boxes of 50. Available in blue or red body, and four ink colors: blue, black, red or green. Made in USA.