Swpeet 252 Pcs Molecular Model Kit for Inorganic & Organic Molecular Model Teacher and Student Kit - 86 Atoms & 153 Links & 12 Orbitals & 1 Short Link Remover Tool

Here is Thymine (half rung) and part of the DNA backbone built from these. I agree with the other comments, box could use a latch of sorts, but the suggestions of elastic bands or gallon ziplocks (or both) are great suggestions. I found the quality great. The bonds work reliably, hold well and aren't loose or too difficult. As soon as I got it, I made benzene (with double bonds alternating), N2 (triple bond) and a whole host of other things including nitric and sulfuric acids. I'm seriously considering getting more kits.

Great definitely came in handy for o chem

I’m happy with this purchase. I have several of these kits from a popular distributor, but I needed “atoms” with five holes. I found this kit and thought I’d give it a try. I bought three kits. They are compatible with my name brand kit. I have two small complaints. First, with this 252 piece kit, there are just too many pieces to fit in the tray with the lid on. The lid does not fit. Which brings me to my second complaint. Since the lid didn’t fit correctly, it was taped shut. I peeled the tape off and it left a terrible, sticky film. I spend a good ten minutes with rubbing alcohol trying to get it off. This made me wiser when I open the second two kits. I just slit the tape with a knife and didn’t try to peel it off. All in all this was a great value for $21.

These are a great study tool for organic chemistry. Allows you to see thing in 3-D compared to the 2-D questions that you are asked

Returned this

I bought this set as a visual aid for my organic chemistry class. This modeling kit made it so much easier to visualize how the structures look and to see how the different atoms are able to rotate when connected.

This is a good kit for beginners, but will not hold up over time. The connections were very loose to begin with and after only a few months, the bonds will fall right out.

This is super helpful if your in o-chem or even gen-chem. I would recommend getting on with a few more connectors and molecule options. But great quality!