Complete Kit: Package includes 2 brass valve stems (hot and cold), complete with installation tools - a specialized screwdriver, Allen wrench, mounting screws, and a Teflon Tape for proper sealing. The precision-engineered components ensure smooth operation and reliable temperature control Compatibility: Standard faucet cartridge replacement suitable for most bathroom, kitchen, and bathtub faucets with 4z-24h specifications. Upgrade your faucet's performance with these premium replacement cartridges designed for standard bathroom, kitchen, and bathtub fixtures Durable Construction: Premium brass construction with precision-engineered components ensures long-lasting performance and smooth operation. Comes with all necessary tools and hardware for a straightforward replacement process Applicable Models: our faucet cartridge is compatible with American Standard faucet cartridge 994053-0070A or 994053-0070A/H; Widely applied in bathroom and kitchen and bathtub faucets Nice Performance: the brass cartridge compatible with American Standard faucet 994053-0070A provides nice sealing performance, which can easily solve the trouble of dripping water; It is not easy to age or wear; The high temperature and high pressure performance of the brass valve cartridge ensures the service life; Compared with the plastic material on the market, the service life of our faucet valve core is longer Nice Performance: the brass cartridge compatible with American Standard faucet 994053-0070A provides nice sealing performance, which can easily solve the trouble of dripping water; It is not easy to age or wear; The high temperature and high pressure performance of the brass valve cartridge ensures the service life; Compared with the plastic material on the market, the service life of our faucet valve core is longer