Garbage disposal collar.It was visibly loose on the garbage disposal underneath the kitchen sink. Customer agreed for us to tighten down and test by filling the sink up with water and draining it. There was no visible damage from this leak. However, the cabinet did show signs of a leak way back in the past. After filling the sink up and allowing it to drain multiple times there was no leak after securing the collar. Thank you for choosing and trusting t e with your plumbing needs