Size of socket needed on rear wheel of Cbr600?

Hey people coming back to you all for more help!!
Sorted the brake problem - clamping the brake lever over night
was a great tip everything is all good once again.

Next question, what size socket does the back wheel on a cbr600 (2001) take? Lent my torque wrench to a mate and left the socket on it and it’s come back without it!! Be buggered if I can remeber the size??

alright mate, good to see you the other day in camden, I can have a look at mine when I get back home, mines a 2004 but it could be the same size?