Moen 4798 M-Pact Two Handle Roman Tub Valve with 10-Inch Centers 1/2-Inch PEX and 1/2-Inch Cold Expansion PEX Adapters Built on the Moen M-PACT common valve system, allowing you to update the faucet style in the future without replacing any plumbing Cartridge type: 1248 Connection size: 1/2" Connection type: PEX; cold expansion PEX