It is a rotating 0.7mm oil based black ballpoint pen.
Brown patina (speckled peacock color) is colored using the properties of brass material. Due to the handmade nature of our artisans, there are no unevenness on the surface or the color of the product. And the more you use it, the more it ages, and the material will look better the longer the time. You can enjoy the depth of the expressions created with time.