This is one stone you really need to have in your tool box. We had
it specially made for one function, then, as we used it, we found
that it works great for many others. Precision-cast, ceramic stone
is an exact fit for smoothing the inside surface between the frame
tangs on a 1911 Auto. A smooth surface gives improved hammer
function and a lighter trigger pull. Also fits the hammer slots on all
Ruger "P" Series Pistols, all Ruger Revolvers plus all S&W K, L,
& N frame revolvers. We didn't plan on such a versatile stone,
but we're delighted it turned out that way.
SPECS: Ceramic, brown, .302" (7.6mm) sq., 5" (12cm)
long.
Catalog page 141