an adjustable wrench, pliers, and something to catch water -- a bucket or towel works fine. A flathead screwdriver may also come in handy. Once ready, disconnect the plumbing under the sink ...

Use a spud wrench ... plumber’s putty to the lip of the drain’s opening and push the new strainer into the hole. The putty will squish out around the top of the strainer. From under the sink ...