Attention please: 1. Inflate is to seal the air inlet, it can still function as normal even if the inflated is not a perfectly round one. 2. Please check if the inlet/exhaust diameter is 2inch Universal Quick Inlet AdapterThe Quick Inlet Universal Adapter is an inflatable block outside the bladder with a pressurized vapor passage that allows technicians to quickly test an entire inlet or exhaust systems.Universal "Quick In" inlet adapter can be used with any type of smoke machine or diagnostic leak detector to reduce the workload in a leak check. Quick inlet bladder block conforms to any shape of inlet/exhaust: round, oval, square, rectangular and even severely angular and hard to reach inlet/exhaust systems, while allowing steam to pass for quick diagnostics.Compatible with any smoke machine, "Quick Entry" fits 100% of automobiles, from passenger cars to heavy duty trucks, to quickly test the integrity of the entire induction system with one simple procedure. Universal inatake adapter:Fit most cars and light trucksQuick seal entry/exhaust easilyReduce workload on a leak checkFits any shape of inlet/exhaust (diameter 2inch) : round, oval, square, rectangular and even severelly angular and difficult to reach inlet/exhaust systemsWork with any type of smoke machine or diagnostic leak detectorsQuick Start Instruction: 1 Clean the inner wall of the inlet opening while the air filter and throttle connections are removed so as not to scratch the adapter. 2 close the pressure relief valve (a) next to the hand pump (b). 3 Place the rubber component (c) into the inlet opening. 4 inflate the rubeber component (c) by pressing the punm of the hand (b) until the inlet opening is sealed tightli. 5 now the system is ready to test, introduce air/smoke into the system by plugging the smoke nozzle into the tube opening (d). 6 After testing, remove the smoke nozzle, release the inflated air by opening the pressure relief valve (a) beside the hand pump (b). 7 clean the storage adapter, avoid contact with liquids. Color: Black Material: Silicone Package Contents: 1 * 1 * rubber Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.