Flusso Faucets Universal Fixtures 1.40" Extension Kit in Polished Nickel (TVH.4401EPN)The TVH. 4401E extension kit consists of two diverter handle extensions and a temperature handle extension. This extension is to be used with the Isenberg TVH. 4401, TVH. 4501, TVH. 4801 valves. It is used when the valve is installed too deep into the wall and the handles need to be extended out further. The extension measures 1. 4 in length. A separate finish cover may be needed [not included] to cover the exposed brass part of the extension on the