Gerald Ross wrote in
:

On Amazon search for Bosch RA1150 Centering Cone $8.99

http://miniurl.org/1dR



Is this large enough to not go through the opening in a base base? It
would be nice for bushings and having a 1/2" as well as a 1/4" end is
a good touch.

Sorry, I don't understand the question. It has 2 ends for the 2 sizes of
bits (1/4 & 1/2"), and the conical flange to assist in adjusting the base.
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Best regards
Han
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