Repair tubular drain under kitchen sink. Replace nut on bottom of basket strainer. Upon arrival I touched base with customer. He showed me the link under his kitchen sink on the drain. I gave him Several options to replace and to repair. He chose to repair at this time. I replace a medal nut on the bottom of the basket strainer and Reassembled the tubular drains under kitchen sink. Tested for leaks. No leaks. Job is complete