Perfect Fit for D R10001 Series: Specifically engineered to match the specifications of the D R10000 series shower valves, this bonnet nut ensures a firm and precise hold, eliminating worries about cartridge misalignment or instability during use. Superior Construction: Crafted from robust metal with a brass finish, this tool is not only structurally sound but also offers a visually appealing look. It features precisely cut threads for a smooth installation, guaranteeing prolonged durability and resistance to wear. Installation Advice: Before installing, clean the valve body's threads with a wire brush and remove all dust and debris from the bonnet nut. This straightforward maintenance step helps prevent issues during installation, such as difficulty in turning or improper tightening of the nut. Essential Functionality: Serving a critical role, this replacement bonnet nut secures the cartridge firmly within the valve, essential for both shower faucets and bathtubs. Regular checks and replacement of the bonnet nut during cartridge changes ensure optimal performance and leak prevention. Note: the actual slightly color difference or difference, does not affect the use of Colour:Silver Material:Metal Package Contents: 1x Bonnet Nut Replacement Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.