The Fluidmaster K-400H-039 Performax Toilet Fill Valve And 2 In. Flapper Kit Offers A High Performance Saving-Water Replacement For Your Faulty Fill Valve And Flapper. Quickly Solve Common Toilet Problems Such As And Nousy Or Running Toilet Fast. With Ez-Twist Height That Adjusts From 10 In. To 15 In. To Fit Most Any Tank. Also Featuring The Performax Water-Saving Toilet Flapper Which Featuring An Adjustable Dial To Customize Your Water Use Depending On Your Needs. The Solid Frame Ensures A Secure Seal While The Hard Water Resistant Materials And Built-In Microban Technology Fight Bacteria And Breakdown. Easy To Install Two Powerful Products To Fix And Upgrade Your Toilet S Fill And Flush Featuring The High Performance Performax Fill Valve With Both Tank And Bowl Water Level Control Universal Design