Moen 4794 M-Pact Two-Handle Roman Tub Valve with 10-Inch Center and 1/2-Inch PEX Cold Expansion Two handle roman tub valve 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