Slim laser cut 3mm, stainless steel exhaust tool which fits between the fins on the cylinder head exhaust nuts on all air cooled twins to enable their removal. 

Ensure liberal use of coppergrease ( OIA11016 ) on re-assembly

With cut outs for 1/2" and 1/4" socket drive.

N.B.  If the rose nut is seized to the cylinder head it is advised to try to saw or chisel through it. Use of a hammer or strong arm lever on the tool invalidates warranty.