Standard saddle rails?

Pritchard5

Hi,

I am thinking about buying a raceface seat post for my bike. The advert for the seatpost says it will fit saddles with standard rails. What are standard rails?
I have a Specialized ATB Body Geometry seat and ive measured that the rails from one side to the other are 5 cm.

Will my current saddle fit this seatpost?
Any help would be much appreciated

Thanks,
Jamie

supersonic

You don't have to post this 4 times.