DOT Air Brake Coupler Assembly 3/8" Hose x 1/4" Male Pipe Thread | K.L. Jack
Air Brake D.O.T. Compression Style Fittings for J844 Tubing - NTA | VS269NTA-10-8
Road Superior Truck Parts DOT Approved Assorted Brass Compression Fitting Kit | eBay
Amazon.com: Vis Brass DOT Air Brake Compression Fitting, 90 Degree Male Elbow, Adapter Nylon Tubing to Male Pipe, 5/8" OD x 3/8" NPT Male (Pack of 1) : Automotive
Fortpro Air Brake NTA Compression Fitting Male 45 Deg Elbow - 1/2" Tub - MaxiTrucks
Pneumatics - DOT Air Brake Fittings for Rubber Hose - Compression Fittings ( DOT) - Buster's Industrial Supply
1/2 in Tube O.D. x 3/8 in MPT, D.O.T. Air Brake Compression Male Connector - 1468X8 - Hi-Line Inc.