I bought this because I knew we'd be encountering some female-female or male-male issues when building our tracks. It was definitely a good buy. HOWEVER, I didn't look closely enough at the picture when I bought this. I thought I'd be getting two pieces with two female ends (which was correct) and two pieces with two male ends (which was WRONG). For some reason, this only includes one piece with two male ends. Instead of a second one of those, they throw in a male-female piece. I don't really know why they do that; it's kind of a waste of money in my case, since I got a ton of those smaller pieces in a bulk track set I bought. But this is still worth it; I just have to make sure I only have one instance where I'll have to use the male-male piece. Not too big of an issue. This connects perfectly with the "100 Piece Bulk Wooden Train Track" I bought here, and our Chuggington cars work well on everything.