Pentel Arts Colour brush, Sky Blue, 1 blister card with XGFL 110X

Amazon

Nylon brush tip pen filled with water-based ink Create beautiful, vivid, watercolour effects Convenient, portable alternative to traditional brushes Value-activated for smooth flow, without leaking 12 vibrant colours to choose from

Amazon Marketplace

Nylon brush tip pen filled with water-based (dye) ink 12 vibrant colours to choose from Create beautiful, vivid, translucent, watercolour effects Valve-activated for smooth flow, without leaking Replaceable cartridges available