Material: The case is made of metal, which is of high quality and durable. Package includes: You will get 4 ballpoint pens in different colors, silver, gold, rose gold and black; these colors are popular with all ages, most people will love these slim metal pens for your own use or As a gift for family and friends. The 1.0mm medium nib makes the retractable ballpoint pen easy to write and ensures an incredibly smooth and intense writing or drawing experience; it writes smoothly on most surfaces and is ideal for everyday use. Easy to use: The ultra-thin metal ballpoint pen uses black ink, which flows evenly and writes smoothly, giving you a good experience; ideal for writing, signing, taking notes, etc. Quality Assurance: We provide the best products to meet the needs of our customers, if you have any questions about our products, please feel free to contact us.