Naniwa A-102 Flattening Stone for Japanese Whetstones Its durable ABS plastic base

Its durable ABS plastic base contains keyed holes that accurately set the stones’ sharpening angles at 30° (15° each side) or 40° (20° each side) for sharpening knives

Coarse (45 micron/325 mesh) to quickly restore a neglected edge

and grind this demanding material to yield reliable

Steel: SK-5 with Black Tuff-Ex™ Finish

Smith & Wesson covers all the bases with this handy all-in-one multi-tool

Naniwa A-102 Flattening Stone for Japanese Whetstones Its durable ABS plastic baseInstructions: Soak the flattening stone in water for about 5 minutes before using it to flatten the surface of a Japanese whetstone. 220 Grit 170 x 55 x 30 mm Made in Japan