Description Chrome Dual Flush Toilet Top Flush Button (48 mm) 48mm Connection 6-inch rods – can be cut to size Design: Dual Flush Button, Round Shape Connection Diameter (Size hole in Toilet-Porcelain): 48mm Material: Chrome Plated Plastic 48mm Dual Flush Button is designed to mount on top of toilet tank. Release the Water in Toilet Tank How to Choose the Right Size Button for Your Toilet- Video