Compatible with WDI models 4027.016, 4021.016 and 4019.016 using the white flush valve Compatible with 3 One-Piece toilets models 2403012, 2403500, 2403800 and 2403850 Product features: 1.Quick & Easy to Install: We know you have better things to do than work on your toilet, so our products are designed for quick installations. 2. Lasting Materials: Made of material that withstands modern water treatments to ultimately save water and money. 3.Quickly fix running and leaking toilets and costly water waste. Color: White Material:PVC size:Length: 12cm/4.72inch Height: 5cm/1.97inch Width: 9.5cm/3.74inch Package Contents: 2*Toilet Flapper Note: Check the repair part information for your toilet to confirm compatibility Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 4.3-Inch flapper assembly: Fix common running toilet problems with toilet flapper. The Flapper is engineered to function flawlessly and the superb design is and reliable. 3.Easy to Install: No tools are required for installation.Includes stainless steel chain with clip hook.. Use the Flapper Assembly with the 3 one-piece toilet. You will install it easily with confidence. 5. High quality replacement toilet parts :Replace old, leaky and inefficient toilet flappers to save on expensive water waste. 2.Water saving: Replace old, leaky and inefficient toilet flappers to save on expensive water waste with this large toilet flapper 1.For repair part: Toilet flapper is replacement for 38920-0070A 3-Inch Flapper.