K-spline

Roughly cylindrical, the K-spline was a gray mechanical component that could be inserted into console systems aboard refueling space stations. Such an application of the K-spline would result in power being diverted from other systems of the station.

In 34 ABY, the engineer Neeku Vozo was struggling to repair the scanning systems aboard the refueling station Colossus. Fellow engineer Nenavakasa Nalor, who was secretly a saboteur for the First Order, advised Vozo to insert the K-spline into a console to soft-reset and repair the systems. In reality, she had tricked the other engineer into accidentally sabotaging the station's thruster systems by diverting power elsewhere.

Later on, as the pair was working in the station's service tunnel A2, Nalor tried to confess about her intentions to Vozo, admitting that the K-spline did not in fact work in the way Vozo believed it did. After Nalor was exposed, Vozo and Resistance member Kazuda Xiono reversed most of the changes that the saboteur had made aboard the Colossus. With the thrusters still inoperational, Vozo realized that he needed to remove the K-spline and did so, allowing the mobile station to escape from First Order forces that had arrived to capture it.

The K-spline first appeared in "The Engineer," the fifth episode of the second season of the animated television series Star Wars Resistance, which aired on November 3, 2019. In the corresponding episode guide, the component is mistakenly referred to as a caseline. The animation model for the K-spline was priorly used to represent multiple mechanical components in the first season's double episode premiere "The Recruit," released on October 7, 2018.