I'm watching videos online describing how to fix a leaky Delta kitchen faucet. As I'm following the instructions I encounter an odd hitch. Where, according to the video, there should be an empty and clear spigot supply hole, mines has this weird object I'm not exactly sure what it does.
Does anyone know what this part does, and is it needed to stay in the spigot supply hole are entirely optional to keep out? Is it possible this ist he source of the leaks?