Hi all,
I'm wondering if this is an unlikely request - are/were these prone to failure perhaps ? (I can't even recall how I came across the mateless part). Pics below. The drilled 99BIS rings are nice- i'd love to mount em up on a very ugly Mondia Special that has moved into the garage !!
Arms are 170 - threads are 9/16 x 20
http://www-hsc.usc.edu/
Rich Pinder
Sherman Oaks, CA