Question about prop

[victorc1]

Hello, I took the propeler off and it has these numbers on it
48 78122 A40 21P I looked for the 3 set of numbers that say how many fins, diameter and pitch but I cant find it. Does anyone know what those numbers mean?

 

[180shabah]

Re: Question about prop

This shoud be in the prop forum, but the important number is the 21P, means the pitch is 21 inches.

 

[victorc1]

Re: Question about prop

Okay going to the prop forum, thanks.