Chameleon Art Products, Replacement Mixing Nibs - 10 Pack SPECIAL DESIGN - These Mixing Chamber nibs for Chameleon Pins are created to ensure perfecting blending and coloring. DURABLE NIB - The Mixing Chamber Nib, while durable, over time they may get damaged or worn but can easily and affordably be replaced when needed. JAPANESE NIBS - Our Nibs are specially designed Japanese nib for perfect blending and coloring. STAY ART READY - Keep all of your Chameleon Pens art ready with these 10 replacement Japanese Bullet nibs. WE WILL GUIDE YOU - Our instructions will guide you all the way through the replacement process so you can get back to the art.