Unbranded 169H Diamond Sharpening Hand Tools, Other

The Unbranded 169H diamond sharpening stone is listed as Hand Tools in the color Other. Its monocrystalline diamond surfaces combine extra-coarse 220 grit (60 micron) for damaged edges with fine 600 grit (25 micron) for refining them. The 8" x 3" (200 mm x 75 mm) plate supports larger tools and helps with stability and angle control. It stays flat, needs no lapping and works dry.

The stone is made to withstand heavy sharpening pressure; its Three-Times Electroplating Process anchors the diamond particles and controls abrasive exposure. MirrorFlat precision-ground flatness is specified at ±0.002 inch / 0.05 mm for even blade contact. A 4-angle guide offers 14°, 17°, 20° and 25° settings, while the non-slip pad steadies the stone and protects the work surface.

The diamond surface can sharpen hard steels, including CPM-series steels, M390 and Elmax. The supplier states that it is headquartered in California, USA, with branches in Germany and Australia, and that its products undergo testing.