Jet Stream 3 Color Ballpoint Pens: "A addictive and smooth writing experience. Jetstream, 3 color ballpoint pen made it easy to use with black ink that is used frequently
Feature 1: When using black ink, the knock stick is placed on the back of the pen, and the black ink can be released without any hesitation
Feature 2: Casual glasses mark for a limited feel
Feature 3: Clip: Black, Knock Rod: Clear
Size: Shaft Diameter 0.4 x 0.6 x 5.8 inches (12.2 x 16.6 x 147 mm); Weight: 0.4 oz (12.5 g); Ink Color: Black, Red, Blue; Ball Diameter: 0.02 inches (0.5 mm)