Features: 1.The pen body with solid plastic and stainless steel construction, sturdy and durable for long term use. 2.0.5 mm just fine nib, smooth writing, legible handwriting, perfect for daily writing. 3.4 pcs coming in a package ensures that your don't need to worry about lacking of pen in fairly long time, very practical. 4.Once the pen is full of ink, and it can be used for fair long time with 600 - 800 m writing length. 5.Easy to use, and anti-slip shell is great for grip, nice gifts for office man and students to practice calligraphy, drawing, writing and more. specification: The pen body with solid plastic and stainless steel construction, sturdy and durable for long term use. 0.5 mm just fine nib, smooth writing, legible handwriting, perfect for daily writing. 4 pcs coming in a package ensures that your don't need to worry about lacking of pen in fairly long time, very practical. Once the pen is full of ink, and it can be used for fair long time with 600 - 800 m writing length. Easy to use, and anti-slip shell is great for grip, nice gifts for office man and students to practice calligraphy, drawing, writing and more. : Condition: New and High Qualit Nib Material: Iraurita Pen Body Material: Plastic + Stainless Steel Product Color: Transparent Yellow + Transparent Blue + Transparent Pink + Transparent Green(Each Color 1 Pcs) Length: Approx. 14 cm / 5.51 inch Pen Body Diameter: Approx. 1.5 cm / 0.59 inch Nib Size: 0.5 mm / 0.02 inch Ink Supply System: Spiral Gallbladder Pen Lid Type: Rotating Quantity: 4 Pcs Weight: Approx. 120 g Packing List: 4 x Clear Fountain Pen(The ink is not included Instructions: -Rotate the ink in. -Insert the ink cartridge into the tip (push). -The pen tip is screwed into the pen. -Storing the pen for a few minutes can be written naturally. Note: Containing small parts, not suitable for children under the age of 3 use, beware of children swallowed. Due to different monitors, please allow a little color deviation. We appreciate your understanding. If you don't use it and please use the pen cap to cover it. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.