I generally use this cable for splitting a headphone output signal to left and right for recording into a Tascam hand recorder, or the unbalanced stereo inputs of a guitar pedal.
Can also be used as an insert cable, although if you’re using it with a mixing console you may want a longer length.
Due to the fixed split, it will only work as an insert on guitar pedals/outboard gear if all the connections are on the same side and within reasonable distance.
This line of Cordial cables is absolutely solid. Gold plated connectors, rugged metal housing, sturdy cables. I’ve had this a few years, still works great.