Thank you for viewing. This is a cross-type oil-based ballpoint pen refill. It is a no-brand compatible product and not an original product. The total length is approximately 117mm. In addition to the cross type, we also handle Parker type and Montblanc type refills. Montblanc type is available in oil-based and water-based rollerball. Ink colors are black and blue. Red is also available for cross and Parker types. Combinations are also possible, so please feel free to inquire in the comment section.