Parts List: 2 x Valve Core Highlight Precise Fit : Specifically designed for bathtub and shower faucets , directly replaces part #910-030 . No additional modifications needed for a hassle free fit Universal for Hot and Cold Water : 4.5 inch ceramic valve core . Simply flip the white plastic connector to switch between hot and cold modes . One set meets both needs , offering flexibility and convenience Enduring Material : Brass body + ceramic valve core , rust resistant and wear resistant . It fundamentally solves water leakage problems , protects the water system for a long time , and reduces maintenance frequency Easy Installation : Washer free design simplifies the installation process , eliminating the hassle of traditional washer replacement . You can quickly complete the replacement by yourself , saving time and effort Energy and Water Saving : Precisely stops leaks , solves the problem of dripping faucets , avoids waste of water resources and energy , is environmentally friendly , reduces water costs , and is practical and considerate Detailed Description : This ceramic valve core , designed specifically for bathtub and shower faucets , directly replaces part #910-030 without extra modifications . It works for both hot and cold water via flipping the white plastic connector , features a brass body with a ceramic core to resist rust and wear , solving leaks at the source , and has a washer free design for easy DIY installation . It also saves water and energy by stopping drips , reducing costs and waste Key Features : Designed specifically for bathtub and shower faucets , it features a brass body with a ceramic valve core for durability and leak prevention , as well as water and energy conservation Specification : Material : Brass+Ceramic Color : Gold Size: 4.5 x 0.8 inches / 11.4 x 2 cm Universal for Hot and Cold Water : 4.5 inch ceramic valve core . Simply flip the white plastic connector to switch between hot and cold modes . One set meets both needs , offering flexibility and conveniencePrecise Fit : Specifically designed for bathtub and shower faucets , directly replaces part #910-030 . No additional modifications needed for a hassle free fitEnduring Material : Brass body + ceramic valve core , rust resistant and wear resistant . It fundamentally solves water leakage problems , protects the water system for a long time , and reduces maintenance frequencyEasy Installation : Washer free design simplifies the installation process , eliminating the hassle of traditional washer replacement . You can quickly complete the replacement by yourself , saving time and effortEnergy and Water Saving : Precisely stops leaks , solves the problem of dripping faucets , avoids waste of water resources and energy , is environmentally friendly , reduces water costs , and is practical and considerate