- Hard white aluminum oxide soaked with oil
- Excellent for machined surfaces
- Holds shape well for finishing mold details
- Made in USA
PCS Company offers the Gesswein Oil-Treated Finishing Stones which are a hard white aluminum oxide soaked with an oil solution to prevent loading. They are a fast-cutting stone with moderate breakdown. Often this stone is used for EDM scale removal. They can be used with or without stoning oil. Excellent for machined surfaces and holds shape well for finishing mold details. The oil treated stones offers fine cutting ability.