The 2 flush buttons have dual functions of flushing and water saving, which meets most people's water consumption habits. It is compatible with most dual toilets. flush with 38-50mm holes in the tank lid. The double push toilet button is made of brand new ABS material and stainless steel spring. The galvanized surface is chrome plated, which is beautiful and easy to age, and has strong corrosion resistance. Equipped with two 8cm long screw rods, which can be cut as needed to fit toilets of different heights. How to choose: Remove old damaged toilet lid knob edge and measure the inner diameter of the toilet lid mounting hole. Our flush knob can be installed in a 50mm and 38mm ceramic round hole. Type: toilet button Material: ABS plastic Features: Environmental protection. The outer diameter of the button: 50 mm. Thread diameter: approx. 38 mm. Screw length: approx. 114 millimeters. Package included: 2 toilet cistern knobs. Tips: Due to the difference between Due to the light and screen settings, the color of the product may be slightly different from the image. Due to the different manual measurement, please allow slight differences in size.