Rear wheel hub on a 400ex

[SLB400EX]

Can somebody please tell me the size of the metric socket needed to take off the castle nut that holds the rear hub on.
Thanks Sher

[papaw]

its a 26 or 27 mm

Its 27mm. I bought a craftsman at sears. i think it was about $8.75. You can probably get them cheaper elsewhere.

[SLB400EX]

THANKS!!!!
later, Sherri