Hard plastic barrel and sheet metal nib, writing smoothly, snap on type cap, durable. The design is stylish, the strokes of the pen are smooth and smooth, and the grip is comfortable. Perfect choice for student, teacher, business person, white collar, calligraphers, writing enthusiasts and so on. Great gift for kids, birthday, christmas, corporate gift and wedding souvenir. Can use ink directly or ink cartridge(need to be purchased separately). Specification: Material: Plastic Pen Size: Approx. 138x8x11mm/ 5.43x0.31x0.43 inch (Orange) 137x8x11mm/ 5.39x0.31x0.43 inch (Red, Clear Blue) 143x8x11mm/ 5.62x0.31x0.43 inch (Black) 144x7x11mm/ 5.66x0.27x0.43 inch (Blue) Nib Point Size: 0.38mm/0.01inch, 0.5mm/ 0.02inch Color: Orange, Red, Black, Clear Blue, Blue Package Includes: 1 Piece Writing Pen Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Please allow 1-2cm measuring deviation due to manual measurement. Thank you!