USA Brand ZEYAR. SHAKE WELL BEFORE EVERY USE: Valve Mechanism, Great control of ink and gas, High-Technology, Archival Quality 12 Metallic Colors: Metallic Black, Metallic White, Metallic Blue, Metallic Red, Metallic Yellow, Metallic Green, Metallic Pink, Metallic Violet, Metallic Orange, Metallic Brown, Gold, Silver Dual Tips: One Extra fine point great to details and outlining, and one Chisel Tip for filling. 1 Equals 2, Finish your porject with only one set of pens instead of 2 sets Ink made in Italy: Waterproof and Sun-proof, Fade-resistant after totally dry, quick-drying, Environmental friendly. Conforms to ASTM D-4236 certificate, non-toxic and acid free. But don't swallow it and No food contact Smooth Writing: Writes on nearly all smooth surfaces with your imagination and creation, allowing you to easily write on paper, stone, rubber, ceramics, wood, glass, plastic! Not suitable for porous and rough surfaces. Ink Certificated: Conforms to ASTM D-4236 certificate, non-toxic and acid free. But don't swallow it and No food contact. Quick-drying, Opaque Ink, Great Coverage, Water & Fade resistant, Environmental friendly. WE CARE ABOUT ALL CUSTOMERS: Here at ZEYAR, we are professional markers manufacturer with sophisticated R&D, Quality control processes to ensure all our products maintain great quality. For us, drawing is an expression of the human feelings and experience. That’s why we work to make Our markers supplies accessible to all people. For used needle tip pens. If you leave the pen idle for more than half a year, the needle nib may dry out, and clogging may occur when it is used again. Here is the solution: 1: Because liquid chrome ink is very thick, the ink stratification phenomenon will be very serious if it is not used for a long time. Please shake vigorously for 1 minute before use with the cap closed; 2: Open the needle cap and pull out the needle. Wipe the needle tip with alcohol-based sanitizer wipes or alcohol cloth for several minutes to dilute and dissolve the clogged ink inside; 3: After cleaning the needle tip, put the needle tip back into the pen body. Press up and down on draft paper and wait for the ink to flow out to write normally