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more complicated?
LOL its a bottle with 2 hoses on it.
And it cost like nothing to make.
And it works better than any mityvac Ive ever used short of an electric one.
You suck into the bottle, seal it, and turn the valve and let physics take care of the rest.
It works great, and you dont have to DO anything while its working, where with a mityvac you have to sit there pumping with your hand.
It works better than a mityvac for sure.
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