Adjustable Fill valve</br>The product is highly durable and easy to use</br>Easy installation and easy handling</br>Cap color doesn't matter</br>Look at shank?? if black use this valve and if gray use GP1138930</br></br>Product Description</br></br>Kohler Genuine Part?? Adjustable Fill Valve Kit?? Adjustable to correct size.</br><br/>http://www.amazon.com/gp/product/B001GZVSX6