Yep. Those are the hinges. I recommend them. Makes it easy. I used barrel hinges for the firebox but I like the cam hinges better.
I have been using barrel hinges for everything because I couldn't find these. I'm going to use them for my doors for sure, may even try them on my firebox. That company, Trinity Expedition Outfitters, seems like good people. I got the product last night and it's perfect. On top of that they noticed that I live in West, TX where the fertilizer plant exploded and sent me a nice note and some freebies. Just wanted to give them a plug. I'm a customer for life after that.