sorry for flood.
to be to understand what i need
a nut with 60 ° tapper
a sleeve shank to the bore of holes of my rim and whose length is the thickness of my rims at the level of the insert
the sleeve is used to center the wheel?
those ebay links really seems too long sleeve

"Wolfrace type sleeve nut 41/64ths small bore"
this is seems to be good for me.
41/64ths small bore it's the bore to my insert ?


many thanks