The Gravitas nr 8 steel nib unitis laser engraved with the Gravitas logo and delivers a smooth and reliable writing experience with consistent ink flow. Made from durable stainless steel, the nib is paired with an ebonite feeder for optimal performance. Designed to fit Gravitas Monster and Piston fountain pens. Comes with pre installed white oring at the base and gasket at the top - in order to fit into the according Gravitas pen models.

This nib unit is easy to install, perfect for those seeking an upgrade or replacement.