1/2 inch or 9/16.

[Why isnt this working]

Morning boys and girls.

Ive asked this a million times but always forget because im thick

I have a sugino gt crank, does that require 9/16 pedals.
Many thanks and i promise i wont ask again.
SI

[Voodoocars]

1/2" for one piece crank - 9/16 for everything else.

[Why isnt this working]

Many thanks dude.

Later. 

[QUADROPHENIA]

unless its a terrycable / cw crank