Silicon Carbide Narrow Stone for Edge Pro

For Hapstone, TSProf and Edge Pro knife sharpeners (Edge Pro format)
$10.00 USD 📊 Grit Chart
JIS Grit



Gritomatic Sharpening Stones are used for sharpening knives using Edge Pro sharpeners. The stones are made of silicon carbide and are designed for the hardest steels (up to 65 HRC). Narrow stones (12 mm wide) are suitable for recurved blades. All stones are 6 mm thick and are mounted on high-quality aluminum blanks.

It is advisable to use Gritomatic stones for sharpening knives made of hard stainless steel or carbon steel. Using Gritomatic stones to sharpen knives made of soft steel is not recommended, as it will cause the stones to wear an at increased rate. However, coarse Gritomatic stones of 120 and 240 grit can be used as a universal stone due to their harder bonding.


  • Product size: 160 x 12 x 9 mm (6" x ½" x ⅓")
  • Working surface: 152 x 12 x 6 mm (6" x ½" x ¼")
  • Weight: 40 g (1.4 oz)
  • Abrasive: Bonded Silicon Carbide
  • Extra materials: Aluminum Blank, 3M PSA

How to use

Gritomatic stones should be used with one of these lubricants:

  • Water
  • Soapy water

Gritomatic stones do not have any minor defects.

Gritomatic stones do not require any preparations. It's preliminary lapped.

Q & A

  • What is the difference between Gritomatic stones and Boride CS-HD?

    Both series are extremely good, but it's very difficult to answer the question. Parameters of an abrasive and bonding of Boride CS-HD series is intellectual property of Boride. We can say for sure that Gritomatic uses harder bonding for 120 and 220 grit, and bonding of equal hardness for 400, 600 and 1000 grit. CS-HD offers 9 grits, while Gritomatic offers 5 grits only.

  • Can I buy a sharpening stone without a blank?

    We don't sell sharpening stones without blanks.

About Gritomatic

Gritomatic is not just an online shop. This private brand is a collection of high-quality, custom-made sharpening products. Gritomatic offers natural and synthetic stones, empty blanks and leather.

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Questions and answers

If you have a question regarding this product, please feel free to ask.