Lisle 42400 Airline Disconnect Set Disconnects quick connect push-in connectors found on heavy-duty truck air systems and more Smallest size also works on automatic adjusting air suspension systems for automobiles Disconnects air systems on brakes, suspension, steering, engine, transmission and other auxiliary equipment Also disconnects other quick connect push-in fittings, including: flow control valves, check valves, shuttle valves, quick exhaust valves and other function control fittings in compressed air systems Each tool is double-ended to disconnect air lines even in hard-to-reach areas, angled end allows maximum leverage, smaller end fits in tight spots Set comes with five popular sizes: 1/8"-5/32", 1/4", 3/8", 1/2" and 5/8" Smaller end fits in tight spots Angled end allows maximum leverage Each tool is double-ended to disconnect air lines even in hard-to-reach areas