Specifications: A addictive and smooth writing experience. Refill for Jetstream rollerball pens. SXR-200-05 Product Size: Shaft Diameter φ0.09 x Total Length 2.6 inches (2.3 x 67.0 mm); Weight: 0.04 oz (1.0 g); Ink Color: Red; Body: SXE3-3000-05