uni filter size for tdr?

[4wdingman]

Hi my little brother has a cheap tdr 125 semi-auto and we were wondering what size filter fits on it. We measured it and it was around 38-40mm could i just get the 40mm and would it matter if it was too big? would it still clamp on?

thanks

 

[----M@TT----]

It would clamp on as long as u do it up tight.