[ Dimension ] - Total length is 9.9cm (3.9 inch) 1mm medium tip black/blue ink. [ Smooth Writing ] - High quality refills with 1.0mm nib provide smooth and consistent ink flow for a superb writing experience. [ Quick-drying ink ] - Flowing ink delivers consistently smooth writing on paper without spilling or smudging, which also helps keep your hands and wrists clean. [ Durable ] - Metal ballpoint pen refills are made of metal, which has a glossy surface, good texture, large capacity design, and can be written on for a long time. [ Applicability ] - 10 pack replacement ballpoint pen refills, compatible with many ballpoint pens, helps to extend the life of your favorite pen. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!