When I worked a a bike shop we always had problems getting a metric socket that was non-OEM to work on Campy and TA arm bolts. The solution was to take a cheap metric socket and grind it down until it fit properly. Otherwise, Campy arm bolt removal tools go for $15-20 USD on ebay. If price is not a concern and you want to save the hassle, ebay may be the best way to go...
Regards, Steve Neago
> The crank puller thread diameter shouldn't be variable, and the peanut
> butter wrench wall thick ness should not be a problem.
> Did someone put 16mm head Stronglight crank bolts in that thing?
> Ed Braley
> Falmouth, Maine
> ----- Original Message -----
> From: "Bingham, Wayne R." <WBINGHAM@imf.org>
> To: <Classicrendezvous@bikelist.org>
> Sent: Wednesday, February 27, 2002 7:35 PM
> Subject: RE: [CR]Peanut Butter Wrench and Early SR Crank Bolts
> > Steve Freides wrote:
> > >It seems like the walls of the socket are just
> > >a little too thick
> > and Paulie Davis wrote:
> > >>I have had exactly this problem too. I have ordered Snap-On sockets,
> > tried
> > Sears too, and even bought the peanut butter wrench, all to no avail.<<
> > I got to thinking about this, since I couldn't recall it really being a
> > problem, particularly with Campy cranks. Not to get too anal about it,
> > I did a little quick measuring of the options I have in the shop and this
> > what I found:
> > Campy NR 3-in-diamond crank arm retainer-bolt opening = 20.7 mm
> > Craftsman 12 point 15 mm socket, outside diameter (OD) = 20.2 mm
> > Park CCW-4 double-ended 14/15 mm ratcheting box-end wrench, 15 mm end (OD)
> > 20.4 mm
> > Ofmega "peanut butter" wrench, 15 mm (OD) = 20.1 mm
> > So even in my limited research, I have three options that work.
> > Is this a common problem others have encountered? I seem to recall having
> > the problem with other cranksets, but not Campy. Is it possible that
> > could be that much difference from crank to crank?
> > Wayne Bingham
> > Cold Falls Church VA