Normally stereo to twin mono cables are split at the mono end. This one is Y split at the stereo end, which means you get two long mono jack runs without having to peel the cables apart.
I use these for splitting inputs on my edrum module to add extra pads/cymbals, and the long mono runs make it easy to arrange the cabes around the drum rack. I swapped out the straight mono jacks for some right angled jack connectors to allow the cables to exit the drum pads and run straight down to the rack rather than sticking out.
Quality is suprisingly decent. For my uses these are way thicker than needed just to carry the piezo signals to the module, but this should reassure anyone that is needing these for normal audio applications.
A very good buy assuming the split cable suits your needs, otherwise this could be a mild nuisance for you.