Hi for all

I have a problem...

i want to replace my fork seal but i dont know what the Dimensions for the fork seal

Offered me buy fork seal of "atena" Someone know the company?

and the big problem is Something strange, whene i look in catalog of "atena" i see s the inside Measure is a 42 but I measured the fork With caliber i got 43 That makes sense?

Does anyone know the real dimensions of fork seal?

my bike is a cbr 600 f4i 2005

 

pleasee