Description Chrome Dual Flush Toilet Top Flush Button (58 mm) 58mm Connection 6-inch rods – can be cut to size Design: Dual Flush Button, Round Shape Connection Diameter (Size hole in Toilet-Porcelain):58mm Material: Chrome Plated Plastic 58mm 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