Re the earlier posts in this thread on British Only Austria this is the reply I got on where they are made and of what material, not very re-assuring I think!
On 6/01/2012, at 9:36 PM, "British Only Austria" <office@vintage-motorcycle.com> wrote:
Dear Sir
Thank you for your enquiry.
They are made in England, Birmingham.
Further information is not available, only we sell them for years all over the world and
to date we have had no problems.
We can offer:
Camshaft Std. BSA A7 A10/article nr: 67-0356 EUR 115,40 less VAT = EUR 96,17
Shipping Priority Parcel. EUR 38,50
TOTAL: EUR 134,67