I believe this is the term for the item for which I am looking. It threads into the brake boss on the fork and the cantilever is then attached with an allen bolt.
Could someone tell me where I might be able to buy these online? No luck at Nashbar, Performance, Jenson, etc. I am also wondering if there are many different types. I have one that fits the fork and need a second to match.
Thanks in advance for any help.