MuHize Compression Union Fittings Kit - 4 Pack 5/16 Inch Heavy-Duty Brass, Corrosion Resistant Tube Connector for Trucks Industrial Lines

MuHize 5/8" OD Brass Compression Fitting - Heavy-Duty Leakproof Union Connector for Truck Air Brake Systems & Industrial Trailers, Easy No-Tools Installation, Corrosion-Resistant (2-Pack)

Taiidaues 135 Pcs DOT Air Brake Line Fittings, 1/4" 3/8" 1/2" Brass DOT Compression Air Nylon Tubing Fittings Connectors Assortment For Trucks or Industrial Use

Taiidaues 42 PCS DOT Air Brake Line Fittings, Brass Compression Air Nylon Tubing Fittings Repair Assortment 1/8" 1/4" 3/8" 1/2" 5/8" For Trucks or Industrial Air System

Galvanized Union

JB Industries Union, 1/2 in Acme Mx1/4 in SAE F, 0 Deg

Midland 18-153 Brass Female Adapter, 3/8" Compression x 1/4" Female NPTF, 1.06" Length

Midland 18-081 Brass Compression Reducing Union, 1/2" x 3/8" Size

26063 Captive Sleeve Union with 26002 Sleeve Nut, 3/16 in Compression x 3/16 in Compression, Brass (3 Pack)

Midland 18-179 Brass Male Adapter, 1/4" Compression x 1/8" Male NPTF, 0.88" Length