1 Pack Toilet Flush Button Replacement, 38mm Dual Flush Toilet Button, Flush Button for Bathroom Toilet Repair. Toilet Flush Button Set: You will get 1 standard dual flush toilet flush button Universal Size: Diameter: 38mm/1.5inch. Our flush buttons are compatible with holes from 38mm to 45mm in diameter. Please check the hole size of your toilet lid before ordering. Durable Material: The dual flush toilet button is made of ABS engineering plastic, the surface of the button is chrome-plated, not easy to aging, corrosion. durable and wear-resistant. Easy to use: This universal flush button replacement is very easy to install. It only takes a few minutes to install and ensure that the plunger is properly engaged and the toilet is properly flushed again. Product application: The push button flush is compatible with most dual-flush toilets or tanks, and is a must-have accessory for home office stores.