See also cerealsurfer's post in Morgan photo gallery,

http://www.talkmorgan.com/ubbthreads.php/galleries/14849/Morgan_Octagonal_Wheel_Spanner#

PS I've just acquired two of the MWS tools and, having tried them out ( using a Thorex nylon- headed hammer) found them excellent- no slipping, no marking of the wheels.

GLLHG