Curved Ruby Ceramic Stone for Edge Pro

For Hapstone and Edge Pro knife sharpeners (Edge Pro format)
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Category: curved

Type: Edge Pro Stones



Curved Ruby Ceramic Sharpening Stones are used for sharpening inwardly curved blades on Hapstone and Edge Pro knife sharpeners. The stone has an extremely high hardness rating. The working surface is curved. Curved diamonds are designed to sharpen kukris, karambits, hawkbills, scythes and any type of recurved blades.


  • Product size: 160 x 12 x 9 mm (6" x ½" x ⅓")
  • Working surface: 150 x 12 mm (6" x ½")
  • Weight: 40 g (1.5 oz)
  • Abrasive: Alumina Ceramic
  • Extra materials: Aluminum Blank, 3M PSA
  • Curvature: 12 mm

How to use

Ruby Ceramic stones can be used without lubricants. Alternatively, oil or WD-40 can be used as lubricant.

Ruby Ceramic stones do not have any minor defects.

Ruby Ceramic stones do not require any preparations.

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

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