74 PCS Brass DOT Air Line Fittings Kit DOT Push Lock and Compression Air Fitting About this item 74 PCS PACKAGE: The 74 pcs DOT air brake fittings kit includes 18 pcs quick connect DOT straight unions, 12 pcs compression DOT straight unions, 4 pcs 1/4" schrader valve, 40 pcs sleeves ferrules. Pure brass DOT air fitting assortment types: 1/8" 5/32" 1/4" 3/8" 1/2" 5/8" 3/4" PREMIUM QUALITY: The CheeMuii DOT air line 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 air fittings and compression air 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 800 PSI and in temperatures from -40F to +200F (-40C to +93C). 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