This is one gel ink refill for the Pilot Hi-Tec-C Coleto writing system. The pen body pictured isincluded and can be found under Compatible Products.

The Pilot Hi-Tec-C Coleto takes the classic Hi-Tec-C gel pen—loved by students, artists and designers for its smooth ink and precise needle-point tip—and turns it into a convenient customizable multi pen system! Choose from dozens of different pen bodies and fill them with whatever combination of ink colors, mechanical pencil components, erasers, and styli you want.

Note: When installing a Hi-Tec-C Coleto component, make sure to line up the small fins on either side of the component's plastic push button with the grooves on either side of the component slot in the pen body.

Also pictured: Pilot Hi-Tec-C Coleto 5 Color Body Component - Clear Blue.