OLYCRAFT 4pcs Volumetric Flask 10ml/25ml/50ml/100ml Volumetric Flask Set with Glass Cap Durability & Chemical Resistance Glass Bottle for Laboratory Project

This is an excellent product for the money using it to do your crafts and add your chemicals together for the crap is perfect however it's a very thin glass I don't believe there's very much borosilicate in it because after using it for about 3 weeks that cracked which is not bad and so I went to the next one however compared to the laboratory supplies that you can get they are excellent for their price most definitely do not buy them if you tend to do a lot of experiments because they won't work they'll be broken very quickly have a good one

Good quality, just way smaller than expected. Honestly though, that might have been on me. I kept jumping between metric and standard measurements and likely got myself confused. I'm keeping these for future homeschool science days!