Help! What size triple-square on steering wheel?

I will be changing my oem plastic four spoke wheel to the nice leather 3 spoke, and I don't know exactly what size triple-square (12 point) bit will be needed. Anyone?
I know I can buy a set of 4, but it is unlikely I would ever need the other 3....

Thanks!

Wouldn't it fit 1:1?

A Torx-T-55 Will fit alright. Only 6 point but works fine.

12 mm triple-square.

Thanks! I found a set of 4 for only $7.99!

(apologies to Metalnerd) /images/graemlins/blush.gif