This is a great little tool!  I live in a building with a indoor parking spot in a common area and have little area to work on my scooter.  Oil changes are a bit challenging because of it, until now.  This thing is very simple, small enough to store and doubles as a used oil container until I feel like taking it to the auto store for recycling.  The construction of the handle is a bit chincy, but not so chincy that I feel the need to take away a star.  About 20-25 pumps and its enough to suck the quart out of my scooter.  Being a little suspicious about its ability to completely suck out the entire quart of oil, I took the plug out to check and it got 99.999% of the oil out, just a little dripped out when I took the plug out.  I will probably do a conventional oil change by removing the plug every few oil changes to make sure theres no sludge or metal in the screen.  Unlikely I'll use this for car oil changes as I have to get under and remove the oil filter anyways, but, for small engines that don't have filters or for engines with easily accessed filters it's a great tool!