Fangrui Product Details Package Quality: Made Of High Quality Plastic, , Long-lasting. Chrome Plated , Smooth And Beautiful.pack Includes 2 Total Toilet Push Button. Note: Please Check The Size Before Purchasing Due To The Differences Of Tank Hole Toilet Tank Button Size: 38mm Thread Dia Dual Flush Push Button With Rods. Fit For 1.49inch(38mm) Toilet Tank Cover Hole Diameter. Easy To Install: Dual Flush Toilet Kit Button Fit For 38mm Water Tank Cover Hole.1.unscrew The Lock Nut And Insert The Button Into The Hole. (full Row Buttons And Half Row Buttons Need To Be Consistent) 2.check Whether The Button Rod Is Just In Contact With The Button. If It Is Too Long, You Can Cut It Short. If It Is Too Short, You Can Turn The Button Rod Out To Adjust The Required Length, And Screw In The Lock Nut Until It Is Firm Two Button Design Flexible Length: Full Drainage Or Semi-drainage Can Be . While Saving Water, It Also Protects Resources And The Environment. The Total Length Of The Torsion Bar Is 9.4 Inch; You Can Cut Out The Length Accordi