Overall this is a pretty nice little unit.  It is compact, shipped in a compact box and the overall product quality is good. Product comes with an easily removable vacuum pump, solid plastic collection ball, collection tube of larger diameter tubing that connects to a smaller diameter tube that looks to be wire reinforced plastic covered tubing that easily should fit in most dipstick tubes. Tubes were long enough so I could sit the unit on the floor and have plenty of tube to insert down the dipstick tube.  Very easy to set up and use and the included red funnel makes it very easy and neat to pour the waste into a container for recycle.  The pump, funnel and the tube simply push onto the ball which has rubber type attachments.  I put a little oil on the o-ring under the top rubber piece to help improve the seal.  I bought this to change engine oil for a car that uses 7 liters of 5w-30 synthetic oil.  I ran the engine to heat up the oil some before I started the removal.  The system worked and got just about all of the oil out of the engine through the dipstick.  BUT, it took 4 hours to extract the oil.  The oil moves very slowly through the 1/8" diameter or so tube that is inserted into the dipstick.  With the viscosity of the oil, the small diameter of the tubing and the limited amount of vacuum you can create - you can expect anywhere from 1/2 hour to 1 hour per quart. I tried this with some lighter viscosity fluids and it works really good.  This will be good for the snowblower, generator and other small oil volume units I have.  If you have time this is a nice item.  If you want it done quick this will not be your best option.