Using Tips: Nib should be only partially submerged to avoid ink blots. Put nib against the mouth of bottle to drain excess ink. When ink no longer drips down from the nib, it is ready to write with. Clean the nib after use, to ensure that it work well the next time you use it. Use warm water or soap to clean the nib and then dry it with soft cloth. PACKING: This set contains 12 bottles of different color(light green, lake blue, orange, light blue, brown, pink, yellow, rose red, deep green, light pink, light purple, purple), each one of them filled in 15ml glass bottle placed it in a colorful gift box! Package Weight: 880G Package Size:14*13*4.7cmIf, for whatever reason, you don't absolutely love your pen ink set, just return it, no questions asked, or replace it, if there is a problem. GREAT DECORATION, SWEET GIFT: This value pack can meet your different needs and passions about colorful creations. Very beautiful decoration for your desk at home and at the office. Great gift for graduation, birthdays and other special occasions. FEATURES: The texture is delicate and not easy to block the pen. It can be used for everyday writing pens such as dip pens and fountain pens(0.4- 0.7 thick). NON-CARBON INK: With high ink permeability, good fluidity, non-carbon inks will not cause clogged. Perfect for fountain pen, dip pen, scrapbooks, journals, drawing, sketching, and much more. 12 COLORS INK: Our laboratory ink formulation is made without animal by-products or dispersing agents, providing safe vibrant non-toxic soluble dyes, enabling optimal flow to give color brilliance with durable lightfastness that will not deteriorate or fade.Item Volume: 15 Milliliters. Package Information: Bottle. Ink Color: Blue. Brand: ZZKOKO. Date First Available: July 5, 2019. Best Sellers Rank: #25,655 in Arts, Crafts & Sewing. Customer Reviews: 4.6 out of 5 stars 367 ratings 4.6 out of 5 stars. : B07TVWB8W4. Manufacturer Part Number: ?TNMS-CS. Ink Color: ?Blue. Size: ?0.50 Fl Oz. Number of Items: ?12. Closure: ?Snap. Item model number: ?TNMS-CS. Package Dimensions: ?5.4 x 5 x 1.5 inches. Item Weight: ?1.9 pounds. Brand: ?ZZKOKO. Manufacturer: ?ZZKOKO.