Brass Compression Fitting, 3/16 Tube to 1/8 NPT, Straight

Brass Compression Fitting, 3/16 Tube to 1/8 NPT, Straight made by Speedway Motors, for as low as $4.99.
Standard nut compression adapter fitting for 3/16\" O.D. nylon tube to 1/8\" NPT male.

Studebaker Pipe to Compression Fittings

Hot Rod Air Tools

Plumbing Archives - MRO Parts

Nitrous Oxide System

Nitrous Oxide System

Matco Tubing & Fittings

Brass Compression Fittings and Adaptors

Female Compression Connector, 3/16 (1/8 NPTF) – AGS Company Automotive Solutions

3/8 Comp X 1/2 MIP Brass Adapter, 50% OFF

Brass Compression Fittings Green Line Hose & Fittings

Pilot Valve, Single straight inline, brass, 1/8 x 3/16, Part # DVOR-1514, Wolf Replacement Parts