The 2" Toilet Flush Valve Kit by Kohler Part # RGP1188998 is a genuine OEM product designed for standard bowl shape toilets. The kit includes a flush valve in black color, suitable for modern bathroom setups. Made in the United States, this flush valve is WaterSense certified and comes in a pack of 2 units, perfect for single flush operation. The Kohler brand ensures high quality and compatibility with your toilet, making this kit a reliable choice for maintaining your bathroom fixtures.