Forever in Time Black Ink Precision Drawing Pen Value Case 4pc 0.1,0.3,0.5,0.8mm. With a specially formulated waterproof pigment based ink, these Precision Drawing Pens are fade-proof, waterproof and non-bleeding. Comes in self standing case and four nib sizes to choose from, create intricate detailing, fine lines and stylish lettering for your Card Making, Scrapbooking and other DIY Craft Projects!