614785 CARBORUNDUM OIL STONE #3, 100X25X13MM

Carborundum oil stone: For carpenters and engineers. May be used dry or with oil or water. Sufficiently porous to assure a good grinding or cutting action in combination with wax or oil. Combination stone: A combination of two grit sizes. One side coarse for very dull tools, the other one with a fine grit for clean edging work. May be used wet or dry.