PACKAGE INCLUDE: 100 ft black 1/4 dot air line hose, 2 pcs 1/4 brass DOT tee air fittings, 4 pcs 1/4 brass DOT straight unions, 8 pcs 1/4 brass DOT straight push & NPT thread, 6 pcs brass DOT elbows NPT thread, 2 pcs 1/4 360-degree swivel elbows NPT thread, 4 pcs 1/4 inflation Schrader valves, 5 pcs brass bushing, 1 pc female coupler, 3 pcs female plug, 1 pc extension nipple, 1 pc tube cutter, 1 pc Teflon tape PREMIUM DOT FITTINGS: CheeMuii DOT air hose fittings are made of high-quality CA360 brass, meet D.O.T. FMVSS 571.106 approved, SAE J1131 air brake system requirements, with corrosion resistance, high-temperature ductility, low permeability and long service life PREMIUM PA12 DOT AIR HOSE: CheeMuii DOT air lines are made of high-quality Polyamide 12 nylon, meet D.O.T. FMVSS 571.106 approved, SAE J844 air brake system requirements, with corrosion resistance, high-temperature ductility, high pressure resistance and long service life HIGH-STRENGTH AIR HOSE: CheeMuii reinforced pneumatic tubing has high impact and wear resistance, can withstand higher working pressure, and has a longer service life. At the same time, it has a certain degree of flexibility and can be easily bent to a certain extent without affecting normal use MAX WORKING INTENSITY: The DOT brass fittings and DOT air lines can be operated in pressures from vacuum to 500 PSI and in temperatures from -40°F to +248°F (-40°C to +120°C). Note: see the tubing manufacturer's recommendations for pressure and temperature mutations WIDE APPLICATION: The air hose & DOT fittings kit can be used for air suspension systems, perfect for semi truck/trailer/RV repair air line leak, also ideal for industrial workshops, towing machine hose connection, etc Color black & gold Brand Name CheeMuii Unit Count 1.0 Count Item Length 100 Feet Manufacturer CheeMuii Material Type Brass, Polyamide Imide Maximum Pressure 500 Pound per Square Inch Outside Diameter 0.25 Inches Included Components 100 FT 1/4 DOT AIR LINE, 34 PCS BRASS FITTINGS, CUTTER & TEFLON TAPE Nominal Wall Thickness 0.031 inches