An RH Preyda Hard Black Arkansas bench stone, 10" x 2" x 1/2". Extra-fine density, harder and finer than Hard Arkansas; RH Preyda describes the color as dark grey rather than pure black. Cut to size and finished for flatness. Natural novaculite from the Ouachita Mountains, Arkansas. Made in the U.S.A. No numeric grit is printed.
The 10" Hard Black. Same grade as the 8", longer stone.
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