SUS304 16 GAUGE STAINLESS STEEL:This kitchens sink made of SUS304 16 Gauge Thick stainless steel, which is scratch proof and dent proof. This kitchens sink is brushed and ruse-resistant finish which can protect your sink from dulling or rusting during daily use UNDERMOUNT SINKS:Couoko 30" under mount sinks are designed with REAR-OFFSET DRAIN which offers MORE STORAGE underneath the sink – Seamless UNDERMOUNT installation DESIGN with no exposed mounting deck allows you to wipe water and crumbs directly into the sink PRACTICAL DESIGN:The 30 Inch deep sink is Designed with X -shaped drain grooves, which helps water drain easily and quickly. Anti-condensation undercoating and Anti-noise thick rubber padding of the deep bowl sink can reduce noise and condensation effectively SPACIOUS SINGLE BOWL:The single bowl sink has large bowl making cleanup and meal prep undisturbed. You can put your large pot in the sink to wash which is extremely convenient. The Exterior Dimension of kitchens sink is 30"(W)x18"(D)x9"(H), recommending cabinet size to be 33 inch. Standard 3.5" drain openings is fit for most kitchen or garbage disposal EXCELLENT SERVICE:We are committed to providing our customers with excellent service, including easy returns within 3 months and a comprehensive 1-year support for your complete satisfaction. Please order with confidence and experience our commitment to excellent service