This is the best fluid extractor I have tried. No screws, thus it is very easy and less messy to switch between pieces.

I have used this product for multiple fluid evacuation/exchange jobs and it is easy and effective to use. Decent price as well.

Ive owned this extractor for several years now. It has come in handy for everything from brake fluid flushes, to cleaning out the gunk in the block when I did my head... Great investment, you can even use it around the house