Question Coolermaster fan model?

[Dillusion]

So i put these new fans on the front of my case which are quite similiar to the back fans (coolermaster mb511) they have a layout like this(

https://imgur.com/a/T20C0f9

View: https://imgur.com/a/T20C0f9
) and it cost like 2 more $ than the sickle flow x and i cant find their model anywhere online and they have only 7 fins so i wanna know if my local retailer made me buy a worse fan for higher price

 

[NightHawkRMX]

Take the fan out and look at the back. It will have a sticker on it.

There is no way to identify them without seeing the sticker.

 

[Dillusion]

Take the fan out and look at the back. It will have a sticker on it.

There is no way to identify them without seeing the sticker.

Hmm cant do that rn because i m outside.. but can you atleast tell me if sickle fans are better or the normal blade fans with high surface area on their blades?