Leaking drains? Here's some solutions for this common plumbing problem
Replacing a Sink Drain - Pretty Handy Girl
Kitchen Sink Drain Set - Basket Strainer & Disposer Flange and Stopper - Kitchen Drains - Sink Parts - Sinks
4 holes inside bathroom sink drain (flange?) keep getting water just sitting in them. And some of them have black sludge & junk in them. How can I clean them out? And
How To Replace a Rusty Sink Drain (HowToLou.com) - YouTube
plumbing - How do I remove the sink drain in this situation? - Home Improvement Stack Exchange
How to Replace a Sink Stopper: Quick and Simple Home Repair