Rear spindle tool ?
 

what tool is needed for the blunt end of the ST4S rear spindle, it looks like an enormous star driver ?

not sure what you mean but I use a 30mm spanner to undo one end and then tube from the tool kit (+rubber hammer) to push my spindle out... it should just slide out with little to no force

[Edited on 9-5-2006 by moozaad]

Only need a socket/spanner from one side. Then drift the spindle out.

If you really feel that you need a tool for that end a 17mm hex is what you need. Can't say I've ever needed one myself.