Not sure is if there is another topic that explains how to sex but what is the obvious factor that makes these two males?

Male Squared.

Yes Andy777 there are a good few posts on this, check the section on sexing, especially the topic on Spermathecae, this will show you the type of genital structures to look for on exuviums that tell you if the T is male or Female of a specific species.

www.tarantulas.co.za/forum/sex-this-tarantula

Thanks a mill

Thanks all, I thought so...