Texturing metal is endless fun and can be done with a flex shaft, by
hand with tools and hammer or with a rolling mill. Files are great
too. Just depends what kind of texture you are looking for.
Satin finishes - Scotch Brite, steel wool
Scratch finish - files, Mizzy wheels, Brown 1 inch Radial Bristle
discs, ball burs
Hammer textures - with a planashing hammer, riveting hammer or with
Roller printing - endless
Good textures with sterling can be achieved with a lush and yummy
surface from silver depletion. A process which slowly pulls out the
top layer of copper oxides by heating, pickling and burnishing.
The texturing wheel you are inquiring is I believe, the ones that
has small wires attached to a rotating wheel? If so, this will give
you a pebble like finish.
I enclosed an article which shows photos of the flex shaft texturing
wheels themselves and an example of the finish they make on brass.
Hope this helps!