MICTUNING 43 PCS Brass DOT Air Brake Line Fittings Assortment Kit, Quick Connect & NPT Thread Tube Air Hose Fittings Repair Kit, 1/8" 1/4" 3/8" 1/2" Push to Connect Fittings for Truck or Industrial Air System About the item 1. DOT Air Brake Line Fittings Kit - includes: 6 pcs brass tube tee fittings, 6 pcs brass straight union connectors, 14 pcs brass straight push connectors NPT thread, 14 pcs 90°elbows NPT thread, 2 pcs brass 1/4" inflation schrader valve, 1 pcs tube cutter. Air brake fitting assortment types: 1/8", 1/4", 3/8", 1/2" 2. Solid Build - Our DOT air hose fittings crafted from superior CA360 brass, comply with D.O.T. FMVSS 571.106 and SAE J1131 standards for air brake system. 3. built to endure pressures from vacuum to 250 psi.