Specifications: Uses ultra-fine stainless steel pipe with a 0.03 inch (0.78 mm) diameter tip core, so you can fix even the smallest details. Material: Cap: Recycled PC; Body: Recycled PA; Nib: Stainless Steel; Front Shaft: Recycled PBT; Box: Recycled Paper; Transparent Window: PET; Cap Safety: ISO Standard; Ink Component: Both Oil-Based and Water-Based Inks; [Art Supplies Shop Dot Com Postcard A]: Limited Product!! 1 x Cute Animal Postcard