Square Sink Coupling for Kitchen Sinks (Drain Hole - 4.5 Inches) - Pack of 2This pack of two square sink couplings fits 4. 5 inch drain holes perfectly, made from durable, rust resistant stainless steel. Each coupling features a removable strainer to catch debris and prevent clogs, keeping your kitchen drain clear. The leak resistant PVC connection ensures a secure fit and easy installation. With a sleek, modern design and polished finish, these couplings enhance both the look and function of your kitchen sink.