Installation Instructions TUSCANY 607-9681 Before you begin: Prepare counter top by sling a 11/2" diameter opening for ihe drain al desired elongation for opening for Busgirl Brain Top the counter top as shown below. Best Foster Washer 1, Marks sure the vessel sink is not chipped or broken privets installation. 2. Cheek to see that you have the following parts: ¥ Vessel sink + Pop-up drain (sold separately) GEE fiat Ripe Flat Waster ra installation 1.