Are there any required accessories that need to be bought separately, such as drain conncections?
The Kingston Brass KU321897D does not come with either of the strainers or drains that you see in the picture. Normally you would match these up to the finish of the faucet you are using. Our most commonly bought drain is the K-8801 from Kohler, and you would would need two of them unless you were going to install a garbage disposal. If you are going to install a disposal you would want to find a compatible disposal flange for the unit.