Sunnen K12-432AS Soft Metal Honing Mandrel 0.432-0.447,0.448 Diam. 3.625 Reach

Sunnen K12-432AS is a soft-steel honing mandrel (K12 size) engineered for high-precision bore finishing in metal components. It accommodates a diameter range of 0.432 in to 0.448 in and provides a 3.625 in reach, with a 3.625 in shank length; the abrasive stone length is 1.75 in. The K12 designation refers to the stone size, the shoe is soft steel, and this mandrel belongs to Sunnen’s K Series (K12 sub-family). Catalogued as K12432AS, it is designed for holding K12 inserts in production or job-shop honing to achieve consistent bore geometry and surface finish.