This product is a set of five sealed boxes of genuine Tektronix 016-1902-01 black solid ink cartridges designed for use in Phaser 860 printers. The cartridges are compatible with the Phaser ink jet model printers and are made in Japan. With a standard yield type, these ink cartridges are 3 to a box and are specifically designed for inkjet print technology and are suitable for use in various Tektronix printers.