Krupp Round Cast Concrete Vessel Sink - Copper GreenConcrete construction and a minimalist design form a strong case to add this vessel sink to any bathroom renovation. The sink features a centrally located drain hole and protective layers to minimize wear and tear. Overall Dimensions: 15 3 8" Diameter x 4 3 4" H ( 1 2") Interior Dimensions: 14 1 4" Diameter ( 1 2") Cast Concrete Construction Features Special Additives Such as Plasticizers for Added Durability Basin Sanded for Smooth Texture Throughout