The quality was very poor and the construction materials used were as cheap as possible and not appropriate for a laboratory device. Device was made of ABS instead of PP which represents an absurd cost cutting measure for an item which is supposedly meant to exist in a lab environment and used for filtering solutions in a lab. ABS will be destroyed by even the slightest contact with virtually any solvent or chemical, and furthermore the plastic used was as thin as possible and super flimsy. it would NOT have been exceedingly expensive to make it robustly out of PP, and if I'm paying almost 100 bucks for this I should get a better product. All that being said the one I had even had numerous manufacturing flaws and defects, which made it even less functional than it would have been... TO be honest I have seen several items from this company and have been stunned by the total lack of quality control combined with exorbitant pricing. I returned mine, packaged it perfectly and shipped it in good time exactly as instructed and months later I have not heard whether it was accepted or not, supposedly "still waiting for me to send it"....The filters disintegrated under the tiny bit of vacuum created with the horrible flimsy pump. you would assume because this is a vacuum set that the filters would be quantitative!as others said, the glassware and the hose are greatI have used one of these before and it worked very well so I decided to buy my own. However the suction power was so week it was unusable for my project. I only hope I find a better use for it in the future.Not worth it the tip where the hose goes broke offThe the stopper between the funnel and the flask is two large and prevents the funnel from being pushed in past the vacuum attachment, which causes reflux. It’s a little better if you run it through warm water, but still too thick/largeThe first one arrived broken. The company response was very quick, I received another one and put it to use. The major issue with this unit is the pump. It is very flimsy, and it takes a bit of a "knack" to get it to hold a vacuum when using the device. I thought the vacuum might be interchangeable for my laboratory needs, but honestly it's a bit too flimsy for heavy use. Now the glassware.... that's a different story. The flask and the funnel are built heavy, so you'll get some use out of it.The kit does what it is supposed to. I like having the manual pump.When I was washing the Buchner funnel just before first use, it cut a chunk of skin off my finger because the inner rim had a razor sharp glassy edge on ~1/4 of the circumference. Very poor craftsmanship on the porcelain.Would not recommend unless you are really strapped for cash.The sharp edge on the funnel really is the only complaint.Immediately upon unboxing I noticed the pin at the bottom of the gauge had fallen out in transit, wasn’t super concerned at first. Second time using kit, attempted to filter slightly thicker solution... and blew out the piston in the hand pump before topping out the included vacuum gauge. All things considered the other parts of this kit seem to be of adequate quality.