These are AR-15 iron sights and will likely have a height of approximately 1.41" as that is approximately the height of a standard AR-15 front sight height aperture from other companies, but unfortunately Tacfire does not provide specific information like that and you would need to reach out to them directly to verify the exact height of the rear aperture and front post.
The description says iron sights but click on the actual item you’ll see polymer sights. So what are they?