Hi all! I hope this is OK to post here. If not please let me know.

I've been researching online for a replacement chain ring for my bike, then realised mine doesn't look like everyone elses.



I can only assume I will need to replace both the chainring and cranks if I want a different option, but I just wanted to know.. what is my style of crank/chainring called? Is it a one piece? Are there any disadvantages/advantages to staying with this setup?