Do it Best 1/2 in. Nom Copper x 3/8 in. OD Union

Straight connector. 1/2 nominal 5/8 O.D. copper compression to 3/8 O.D. tube.
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JUWO 1/2 x 3/8 OD Compression Straight Stop Valve for PEX, Copper, CPVC Pipe and Water Line, Push to Connect Brass Plumbing Fitting, Quarter-Turn Shut Off Valve (1 Pack)

BrassCraft 1/2 in. Compression Inlet x 3/8 in. Compression Outlet 1/4-Turn Angle Valve G2CR19X C1 - The Home Depot

Tube Size:3/8 OD Net Weight: 34.7g/PC Choosing products dimensions and quantities at column of size and colour seperately,price would be more

LTWFITTING 3/8-Inch OD Compression Union,Brass Compression Fitting(Pack of 10)

Brass Compression Fittings for Potable Drinking Water

Brass Compression Fittings for Potable Drinking Water

Proline Series 1/2-in x 3/8-in Compression Adapter Fitting in the Brass Fittings department at

LTWFITTING 1/8 in. O.D. Comp x 1/8 in. MIP Brass Compression Adapter Fitting (5-Pack) HF682205 - The Home Depot

1/2 FIP X 3/8 COMP LF ANG BALL STOP LF - 76690 - Best Plumbing Specialties

Choosing products dimensions and quantities at column of size and colour seperately,price would be more favorable if choosing wholesale.

LTWFITTING Brass 1/2 OD x 3/8 OD Flare Reducing Union,Brass Flare Tube Fitting(Pack of 5)

Tube Size:3/8 OD Net Weight: 34.7g/PC Choosing products dimensions and quantities at column of size and colour seperately,price would be more

LTWFITTING 3/8-Inch OD Compression Union,Brass Compression Fitting(Pack of 10)

3/8 OD Compression (Lead-Free) Brass 90-degree Elbow Fitting - Simpson Advanced Chiropractic & Medical Center

SharkBite 1/2 x 3/8 Inch Compression Angle Stop Valve, Pack of 4, Quarter Turn, Push to Connect Brass Plumbing Fitting, PEX Pipe, Copper, CPVC, PE-RT, HDPE, 23036LFA4

Do it Best, 5/8 OD(1/2 Nom. Copper)Inlet, 3/8 OD Outlet, Straight Conn.426113

POLYBUTYLENE repair fittings