JX Superior-807C Needle Drafting Pen,Professional Drawing Pen,Technical Micro Pigment Liner Pens,Pack of 12 Assorted Colors,0.5MM Tip Sizes Set of 12 pcs assorted colors needle drafting penMicro pigment ink for waterproof and fade proof fine lines Water-based&quick drying on porous surface,permanent pigment ink suitable for archival applications Fade resistant,waterproof,chemical resistant Used in illustrations,callingraphy,craft projects,memory albums and scrapbooks WE HAVE 100% MANUFACTURER MONEY BACK GUARANTEE: If for any reason you are not completely satisfied with your set, we'll replace it or give you 100% of your money back, no questions asked.