CONCAVE RING BENDING PLIERS
This unique box-joint plier is made to round any size ring due to its
exclusive shape. The lower (concave) jaw goes from 10.50mm at the
tip to 17mm at the base, something no other bending plier does. Its
inner surface is highly polished tool steel and the edges are rounded so
that it will not mar precious metals. Total length is 61/2" for good leverage