The product is a lot of 72 Tektronix ColorStix Ink in black solid mixed T-Closet. These genuine/original solid ink sticks are compatible with Xerox printers and are manufactured in the United States. Designed for use with Tektronix models 340/350/360, this product provides high-quality printing results in a single black color. With a large unit quantity of 72, this lot offers long-lasting and reliable printing capabilities for various printing needs.