Amazon.com: Mytee Products 3/8" OD x 100' Black SAE J844 Nylon Air Brake Tubing DOT Approved | Pneumatic Nylon Air Line Hose for Air Brake System : Automotive
Aignep USA 3/8" OD Nylon Tubing, Blue Color, 100' Roll, 160-500 psi
VELVAC Black Nylon Tubing, 3/8 in. x 100 ft. #020053
Nylon Tubing 3/8 OD | Polyconn
3/8" High-Pressure Nylon Tubing (priced by the foot) - HydroMist
Amazon.com: UTAH PNEUMATIC 3/8 dot air line Hose Nylon Pneumatic Tubing Sae J844 Dot Approved For Air Brake Tubing Suspension Or Fluid Transfer 10 Meter 32.8 Feet Air Horn Tube 3/8 Air
VELVAC Black Nylon Tubing, 3/8 in. x 100 ft. #020053
NYLON TUBING 66N-N 3/8 from Aircraft Spruce Europe