Where can I find a circle collider for 3D or how to create my own circle collider in Blender?

Question

Unity

Please tell me how can I make my own circle collider or where can I find a ready one? I tried to search and did not find it, and I also did not find information on creating colliders in Blender. Help a newbie in Unity and Blender please.

Answer 1

Maybe a very low cylinder will do?

Answer 2

lmgtfy.com/?q=unity+circle+collider