Product Description Features: Brand New High-Quality Business Signature Set. This office signature pen set includes: a detachable nib, a piston-type ink converter, 6 black ink cartridges, and a 15ml ink bottle. Ideal for business professionals signing documents, writing, etc. 2-in-1 Design. The detachable nib design allows for easy replacement with different nibs. Perfect for DIY scrapbooking, diaries, notes, comic drawing, detailed outlining, DIY doodling, writing, sketching, marking, art design, illustration, etc. Fountain Nib. 0.5mm bullet nib, iridium nib, smooth writing, stable ink flow. The slender, balanced pen body provides a comfortable writing experience. Ideal for business document signing, artistic signatures, etc. Easy Refilling. Upgraded design, piston-type ink cartridges, simply pull the handle for easy refilling. Large ink capacity for long-term use. Detachable ink cartridges, or refillable ink cartridges. Excellent Gift. Ideal for students and children practicing Chinese calligraphy. This is also an ideal gift for girls, boys, teenagers, women, men, beginners, writers, journalists, professional painters, artists, students, teachers, and friends, suitable for various occasions such as Christmas, New Year's Day, Thanksgiving, birthdays, anniversaries, and Children's Day. Specifications: Material: Metal Weight: Approx. 230 grams Ink cartridge diameter: 0.34 cm / 0.13 inches Pen length: Approx. 13.8 cm / 5.43 inches Gift box dimensions: Approx. 3.4 x 9.2 x 19.1 cm / 1.34 x 3.62 x 7.52 inches Colors: Olive Green; Cherry Blossom Pink; Morandi Blue; Morandi Gray Note: Please allow 0-1 cm error due to manual measurement. Please ensure you do not mind before bidding. Due to differences in different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 set of metal signature pens