This is another part of my latest purchase and again it's a Tamiya product. No, they're not sponsoring me (yet) (hello Tamiya!! :-P )
It contains a CA catridge (upper right), a cap with needle for it (the yellow thingy) two very fine tips and a stock with buttons on each side. Guess what: If you press them, the glue comes out. Right.
It's a simple concept and it works great. Another cool addition to every toolbox :)