Replacing tub drain
In your case, you simply have to remove your old drain cap with everything behind it. Put the new chrome drain cap on with the new screw. Next to install the new PresFlow flipflop drain is simple, apply the include epoxy to the bottom of the drain cap, place it on top of your old cap, press and hold it for 2 minutes and you are done.
Hope this had help you.
You can do anything with the right tools and a FEW GOOD BOOKS. (though I was gonna say Men didnt ya). The tools are channel lock pliers, screw drivers, and a sawzall. Get a book on plumbing by Black and Decker. They have good resources. The book will show you how easy it is. My sister was a plumber and it aint that tough, with everything being made from plastic.