K12 CBN STONE, METAL BOND The AG-300 and AG-400 are

The AG-300 and AG-400 are the only gages specifically designed for both clearance and press type pin fits and the journal end of connecting rods

and superior surface finish quality

The vitrified bond ensures superior shape retention and stability under demanding conditions

this abrasive ensures tight tolerances

extending the life of your tools and enhancing productivity

K12 CBN STONE, METAL BOND The AG-300 and AG-400 arePrecision meets performance with Sunnen K12 abrasives engineered for consistent, high quality honing results. Ideal for a wide range of materials, the K12 delivers exceptional cutting action and surface finish, maximizing productivity while minimizing wear. Whether you are refining bores or achieving exact tolerances, trust the K12 to keep your process sharp, smooth, and reliable.