* This Headrest style Air Bag can be used to open lock by sliding it into the door and the weather stripping on the doorframe.
Material: * Made of the high strength material, with special soft board inside it.
Functions:
* It can afford on the pressure of 200 kilograms and doesn't leak gas.
Be careful:
* Don't inflate excessively when using! If the air bag used during a long woking time status, it should be let the air out after the door proped up and then put the triangle block instead to continue the work.
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