MM33-A43 : Sunnen Nicasil Hone Stone Set
These stones fit a cylinder size from 3.3" to 4.2" (84 to 107 mm). These honing stones are sized to fit Sunnen AN-style and Goodson GH-style hones. Use with your portable hone to deglaze Nicasil cylinders. 150 Grit aluminum-oxide abrasive. Guideless stone sets.