REMIUM MATERIAL: Our DOT air brake fittings is made of high quality CA360 brass, meets D.O.T FMVSS 571.106 and Air Brake System Requirements. With corrosion resistance, high temperature ductility and low permeability. Long service use, dot air brake fitting type: 1/8" 1/4", 5/16", 3/8", 1/2", 5/8" DOT FITTINGS KIT:The dot push to connect air fittings package includes 86pcs : 17pcs union connectors, 9pcs 90°elbows male connectors, 9pcs straight male connectors, 7pcs hex bushing, 5pcs tube tees, 4pcs 45°elbows male connectors, 2pcs schrader valves, 32pcs sleeves ferrules,1pc 4m teflon tape TYPICAL APPLICATION: Brass air brake fittings assortment can be used with air systems, copper tubing in air lines brake systems, which is perfect for automotive car or truck repair,air operated seats, operating gauges, air horns, industrial workshops, air brake connections,towing machine hose connection and air brake connections or lawn mower repair MAX PRESSURE: Dot air line fittings assortment pressure resistance, not easy to trip. Air brake fittings working pressure from vacuum max to 300 psi. Temperature Range: -65° F to +200° F(Note: see tubing manufacturer's recommendations for pressure and temperature mutations) EASY TO INSTALL: Our dot brass air line fittings disconnect simply push tubing in, need to use tools to fix loose parts to handle in tight places, so that use will be more firm and not easy to fall off. And pieces that contain a threaded end already have sealant pre applied to provide a secure connection AFTER SERVICE: If you have any problems with dot air fittings kit ,please contact us directly and we will try our best to solve your problems as soon as possible until you are satisfied DOT Air Brake Line Fittings Connector Assortment Kit These Air line fittings pressure resistance, not easy to trip. Dot brass air fittings MAX working pressure is 300psi Tempurature range -65℉~ +200℉. These dot air brake fittings are good airtightness with corrosion resistance, high temperature ductility and low permeability. Great for long time use. This Air Brake Nylon Tubing Fitting Connector Assortment is a reducing adapter for converting NPT thread pipe to elbow compression thread pipe. These dot air brake fittingsWidely used for quick connection of pipes in sinks, water tanks, fuel tanks, bathrooms, refrigerators, kitchens, etc. Brake Nylon Tubing Fitting: Made of brass, has tube connections & suitable for air application. Brass sleeves feature a compression-type connection.