• Premium quality material: reliable plastic casing and high reproduction and color uniformity ink. • Writes smoothly and dries quickly, allowing for seamless writing. • Packing list: 60 retractable pen refills of 1.0 mm. • Ample quantity to meet usage and replacement needs in office or school. • Total length of each refill: 9.8 cm. • Black ink with a medium nib of 1 mm for an excellent writing experience. • Easy to use: can be cut as needed and adjusted to the pen case. • Applicable occasion: suitable for any occasion, including home, classroom, office, and store. • Pocket-sized refills for easier storage.