2 flush buttons, with dual flush and water saving function, in line with most peoples water consumption habits. It is compatible with most dual flush toilet with 38mm-50mm hole in tank lid. The dual push toilet button is made of brand new ABS material, with stainless steel springs. The electroplated surface is chrome plated, with an elegant appearance and not easy to age, with strong corrosion resistance. How to choose: First remove the old knob from the damaged toilet lid, measure the inside diameter of the toilet lid mounting hole, our flush button is suitable for mounting in ceramic round holes from 38mm to 50mm. Type:Push Button toilet Material: ABS plastic Feature: Eco-Friendly. Button outer diameter: 50mm. Diameter f thread: approx. 38 mm. Length of screw rods: approx. 114 mm. Package including: 2 x Toilet Water Tank Push Button. Warm Tips: En Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement . If you have any questions about our products, please contact us in time, we will give you a satisfactory answer within 24 hours