I put in new bathroom vanities that came with the sinks. When I attempted to connect supply lines under the sink I discovered the lines from the faucets are 1/2” female and the supply valve is 3/8”
plumbing - Getting Two 3/8” Inlets after Angle Valve - Home Improvement Stack Exchange
BrassCraft 1/2 in. Nominal Compression Inlet x 3/8 in. O.D. Compression x 3/8 in. O.D. Compression Dual Outlet 1/4-Turn Ball Valve controls water flow
BrassCraft 1/2 in. Nominal Compression Inlet x 3/8 in. O.D. Compression x 3/8 in. O.D. Compression Dual Outlet 1/4 Turn Ball Valve KTCR1901X R1 - The
Uxcell 1/2 OD Tube 3 Way Tee Union Stainless Steel Quick Connect Compression Fittings
plumbing - Is this soldered or compression shutoff valve? - Home Improvement Stack Exchange
water - Connect 1/2 supply line to 3/8 outer diameter faucet line - Home Improvement Stack Exchange
BrassCraft 1/2 in. Nominal Compression Inlet x 3/8 in. O.D. Compression Outlet Multi-turn Rough Brass Angle Valve OCR19X R1 - The Home Depot
Get the job done right with BrassCraft's press connect water stops. With installation done on both wet and dry pipe systems, our press connect water
1/2 in. Press Connect Inlet x 3/8 in. Compression Outlet 1/4 Turn Straight Valve
Tee Stop Valve Add-A-Tee Valve 3/8 Compression Faucet T Adapter for Dishwasher Glass Rinser Washing Machine(3/8x3/8x3/8)
plumbing - How do I replace a toilet supply stop valve attached to copper pipe? - Home Improvement Stack Exchange
plumbing - Fitting needed to retrofit a dishwasher water supply line on copper pipe? - Home Improvement Stack Exchange
Tecmolog 2 PCS 3-way 3/8 x 1/2 Tee Adapter Stainless Steel Angle Stop Add-A-Tee Valve for Toilet, Brushed Nickel, SBA020B-2
5/8 in. O.D. Compression (1/2 in. Nominal) Inlet x 3/8 in. O.D. Compression Outlet Quarter-Turn Angle Valve (10-Pack) 166016-NL - The Home Depot