SMC KQ2H07-35AS Brass Push-to-Connect Tube Fitting with Sealant, Adapter, 1/4" Tube OD x 1/4" NPT Male (Pack of 10)

Vixen Horns 1/4" OD Nylon Plastic Hose Up to 225PSI 20 Feet for Train/Air Horn Systems and Other Suspension Applications VXA7142

Utah Pneumatic Air line 1/4" Od 10 Meters SAEJ844 Air Brake Tubing Nylon Air Hose for Air Brake System Or Fluid Transfer(Nylon Tube 1/4")

SMC KQ2H07-34AS Brass Push-to-Connect Tube Fitting with Sealant, Adapter, 1/4" Tube OD x 1/8" NPT Male (Pack of 10)

Anderson Metals Brass Pipe Fitting, Coupling, 1/4" x 1/4" Female Pipe

PneumaticPlus PC-1/4-N2 Push to Connect Tube Fitting, Male Straight - 1/4" Tube OD x 1/4" NPT Thread (Pack of 10)

Kingston KMBVM Series Brass Mini Ball Valve, Lever, 1/4" NPT Male x NPT Female

Anderson Metals 56122 Brass Pipe Fitting, Hex Nipple, 1/4" x 1/4" NPT Male Pipe

Brennan PCNY2405-04-04 PBT Push-to-Connect Tube Fitting, Adapter, 1/4" Tube OD x 1/4" NPT Female

PneumaticPlus BUC Series Push To Connect Straight Union Ball Valve (1/4" OD X 1/4" OD Tube)

PneumaticPlus PC-1/4-N1 Push to Connect Tube Fitting, Male Straight - 1/4" Tube OD x 1/8" NPT Thread (Pack of 10)