Jetstream Prime Single Knock comes with the same ultra smooth-writing, low-viscosity emulsion ballpoint inkin all Jetstream pens. A unique feature of the Single Knock is its extremely quiet knock mechanism, which is almost completely silent. The metal body imparts a nice but subtle weight to the pen and the sleek and streamlined shape of the body makes it appropriate for use in professional settings.

• 0.7mm
• Black ink
• Refills available in blackandblue