Features: Replacement ink cartridge ribbon is used for electronic time clock machine. With red and black ink color to meet your needs. Prints clearly and installs easily. Made of high-quality material for long-lasting durability. Two inner diameters (3.4 cm, 4.4 cm) available; please check the inner diameter of your previous ribbon before ordering. Specifications: Inner Diameter: 3.4 cm or 4.4 cm (optional) Material: Plastic Ink Color: Red, Black Item Size: Approx. 6.3 x 6.3 cm (2.5 x 2.5 in) for 3.4 cm inner diameter Approx. 6.5 x 6.1 cm (2.6 x 2.4 in) for 4.4 cm inner diameter Item Weight: 17 g (0.6 oz) for 3.4 cm inner diameter 15 g (0.5 oz) for 4.4 cm inner diameter Package Size: 6.7 x 6.5 x 3.7 cm (2.6 x 2.5 x 1.5 in) Package Weight: 25 g (0.9 oz) for 3.4 cm inner diameter 23.4 g (0.8 oz) for 4.4 cm inner diameter Package List: 1 x Time Clock Ribbon