It's super glue. What else can I say. Of all the glues you can buy it is the least forgiving in so many ways.  BUT read up a little on it's uses, get a bottle of accelerator, and you will find this is your adhesive of choice 90% of the time if you are a tinkerer.  Be very careful in cutting off the tip to the absolute smallest opening possible.  I keep a bottle of this and the super thin filler and use them constantly. Of significant importance is that this brand has a very good cap seal. The only time I have had a bottle solidify on me was when I did not snap it on all the way. Experienced SG users know what I mean. If you can remember to keep the cap snapped on this is also the cheapest way to buy SG.  If you are an occasional user you are a lot better off with one use tubes. BTW VERY strong fumes but that goes for all SG.