H70 CBN STONE SET, METAL BOND delivering excellent roundness

delivering excellent roundness

Ideal for a wide range of materials

and consistent bore geometry—critical for peak firearm performance

the GNR delivers exceptional accuracy

Achieve exceptional honing precision with Sunnen 4HPH Honing Tooling

H70 CBN STONE SET, METAL BOND delivering excellent roundnessUnlock unmatched precision with the Sunnen H70 Abrasive, engineered for high performance honing in demanding applications. Designed to deliver consistent surface finishes and tight tolerances, the H70 is ideal for a wide range of materials including steel, cast iron, and alloys. Whether you are finishing engine components or hydraulic cylinders, count on the H70 for faster cutting, longer life, and superior results. Trusted by professionals