They were a bit expensive but probably worth it. Most of the locking nuts were severely corroded (one falling to bits) so it looks like I replaced just in time. Interestingly not one of the other nuts was "blown" even though all were rusty under the cap so they are all in a bag ready to be passed on to the next owner (whenever that might be) as Alistair suggested. Geoff

The Wringtons are definitely 'the nuts'.  Current: FF Westminster money pit

Gone:
RRS 4.2 SC
RRS 3.6 TDV8
FL2 TD4

I'm surprised that there aren't other sources, but hey ho although expensive they were a Fathers Day present from the kids for the man who has everything and is difficult to buy for - me  Geoff