Knife Fulcrum Professional Machine The Norton Flattening Stone is

The Norton Flattening Stone is a fast and effective way of maintaining a flat surface on your water stone

The diamond grit makes proper maintenance of your finest kitchen and carving knives faster and more efficient than ever before

these are high-quality stones

375" means 3/8 pitch

Note that the numbers printed on the stones are Suehiro's part numbers

Knife Fulcrum Professional Machine The Norton Flattening Stone isFor All PT50 Series Sharpness Testers The New KF10R Knife Fulcrum works any of the PT50 Series Edge On Up Sharpness testers. It been redesigned with exciting new features: A wider slot to better accommodate thicker blades A Silcon Insert for edge protection is already installed The best sharpness tester just keeps getting better.