REPLACEMENT CARTRIDGE: Easily swap your roman tub Hot Handle cartridge with this cold side roman tub cartridge. DURABLE MATERIAL: This cartridge replacement has a sturdy brass construction to ensure quality and dependability, giving your bathroom a perfect touch of style. STRESS-FREE INSTALLATION: Using adjustable pliers to unscrew the cartridge counter-clockwise, pull up until cartridge is completely removed from faucet body. To install new, sit the cartridge into faucet body and turn clockwise to thread in. PREMIUM QUALITY PLUMBING: Gerber Plumbing offers timeless products that sport a sleek, modern look, and are a thoughtful balance of form and function.