13 PCS PACKAGE: The 13 pcs DOT air brake fittings kit includes: 4 pcs 1/4 inch tee union DOT fittings, 4 pcs 3/8 inch tee union DOT fittings, 4 pcs 1/2 inch tee union DOT fittings, 1 pc tube cutter. DOT quick connect fitting assortment types: 1/4", 3/8", 1/2"

PREMIUM QUALITY: The CheeMuii DOT air line quick connect 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

QUICK CONNECT FITTINGS: Our DOT push to connect fittings are extremely easy to install, can be sealed by pushing the tube firmly into the fitting and are also simple to remove from the tube

MAX WORKING INTENSITY: The brass DOT air fittings can be operated in pressures from vacuum to 300 psi and in temperatures from -40°F to +200°F (-40°C to +93°C). Note: see the tubing manufacturer's recommendations for pressure and temperature mutations

WIDE APPLICATION: The DOT air brake fittings can be used with air suspension systems, copper tubing in airline brake systems, perfect for truck /RV repair air line leak, also ideal for industrial workshops, daily garden or lawn mower repair, towing machine hose connection, etc