The Premier Copper vessel installation kit includes a large rubber and galvanized washer. These two washers, when used in combination with the sink's drain, allow the installer to tighten the vessel sink securely to the countertop by tightening the drain. This kit contains the large washers only. Drain purchased separately. This installation kit will work with all top mount vessel sinks made of Copper, Glass or stone. Details Specifications & Warranty Shipping& Returns Resources Shop Related Benefits & Features: Configuration: Round Design: Rubber Gasket & Galvanized Steel Washer Color: Silver & Black Outer Dimensions: 3" x 3" Inner Dimensions: 1.625" x 1.625" Installation Type: For surface mount vessel sinks Material: Rubber & Steel Packaging: Recycled Cardboard Box SUGGESTED ACCESSORIES: Copper Sink Installation Silicone - Model: C900-ORB Non-Overflow Bathroom Sink Drains - Model: D-207ORB, D-208ORB Overflow Bathroom Sink Drain - Model: D-209ORB Dimensions (in): 3L x 3W Weight (pounds): 0.15 Specification PDF Warranty Information Free Shipping and Free Returns* for orders within the Continental US. Shipping | Returns See our Blog In the Trade? | Wholesale Registration Visit our Lighting Site | ShopforLights