Pentel Arts Hybrid Technica Gel Pen, Black Ink, 4-Pack (KN103456BP4) Description Smooth pigmented ink is light fast, bleed proof, water and fade resistant. Acid-free archival safe ink is perfect for sketching, cartooning and architectural drawing. Tungsten carbide roller tip guarantees a consistent line from the first to the last drop of ink. Ink will not dry out if left uncapped. Includes 4 pens. Features: Archival roller system Pigmented ink Acid-free and archival safe Tungsten carbide roller tip Light-fast, bleed-proof, water-resistant and fade-resistant ink Includes 03mm, 04mm, 05mm, 06mm. Product Details: Brand: Pentel Color: Black Ink Color: Black Age Range (Description): Adult Material: Tungsten Carbide Manufacturer: ‎Pentel Brand: ‎Pentel Item Weight: ‎1.6 ounces Product Dimensions: ‎0.64 x 7 x 2.47 inches Item model number: ‎KN103456BP4 Is Discontinued By Manufacturer: ‎No Color: ‎Black Closure: ‎Snap Material Type: ‎Tungsten Carbide Number of Items: ‎1 Size: ‎4 Count (Pack of 1) Ink Color: ‎Black Manufacturer Part Number: ‎KN103456BP4 Date First Available: April 1, 2011