BrassCraft KTCR1900DV R1 1/2-Inch Nominal Compression by 3/8-Inch OD Compression by 1/4-Inch OD Compression Rough/Unplated Dual Outlet Dual Shut-Off Stop Stop type: compression inlet Riser outlet: 3/8-Inch OD (1/4-Inch nominal) Inlet: 1/2-Inch nominal copper (angle) Stop style: multi-turn, tee-handle 1/4 turn ball stop 1/4-turn on/off provides smooth operation