Kohler, Sink Strainers.
The K8813-CP is stainless steel strainer that fits sinks with a 3 1/2" to 4" outlet. It includes a 4" tailpiece.
The K8801 is a sink strainer that comes in various finishes to compliment your decor. It also features a quick locking installation system. This item will also fit sinks with a 31/2" to 4" outlet. It includes a 4" tailpiece.