help needed, quick release steering wheel hub size, 3/4" or 5/8" ???

[jamie.91]

I want a quick release hub for my steering wheel but i dont know what size fits a clio, does anyone know what size it is ?

http://www.rallydesign.co.uk/index.php?cPath=82_1812_906

theres two sizes on here 3/4" and 5/8" ??

any help appreciated thanks jamie