cleaning brush identification ?

[Robert Wiggins]

Johnny/Bill;


To be precise the length of the brush is 3 6/8" not including the hook.


Note the following measurements taken with my Lyman Calipers:


The diameter at the fibre bristles is 4.57 millimetres.

The diameter at the bronze bristles is 3.53 millimetres.


What say you now?


Regards;