Mainstay Of The Gunsmith Profession
Man made from aluminum oxide. A uniformly dense stone with superior cutting properties make these medium grit stones cut faster than hard Arkansas. Especially useful for lapping, honing, sharpening and polishing in tight places where the special shapes can reach into nooks and crannies.
Big Book Catalog, Issue:69, Page:446
SPECS: METRIC: 1"= 2.5cm, ½"= 12.7mm.