Hapstone RS Family
The most complete RS system.
Hapstone RS Ultra is the maximum configuration in the Hapstone RS family — a fully equipped sharpening system with two pairs of Small Universal Angled Clamps, case, digital angle gauge, Precise Angle Adjuster, and Advanced Stone Holder already included.
Hapstone RS Ultra — Package Up
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15 ratings
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First knife to sharpen was a cheap 440c steel pocket knife. I started with the 325 grit PDT CBN resin bonded stone on my new Hapstone RS Ultra. After just a few strokes I realized just how powerfully aggressive these stones are. I moved to the 650 grit for a few minutes and finished on the 1500 grit of the same PDT stone series. Total time spent on the Hapstone was 15 minutes. These PDT CBN Expert Pro stones are a dream to work with on my new Hapstone RS Ultra guided sharpening system. Screaming sharp blade on the first try! I am already thinking of getting a 3000 grit and 5000 grit stone for a serious mirror finish.
I absolutely love my Hapstone!!
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Werner · October 19, 2026
I just love my new Hapstone Precision RS Ultra sharpening system. Attached is a picture of me starting off with a Spyderco Endela in K390 steel. This system is a pleasure to use in all aspects of knife sharpening. I couldn't be more pleased. Thank you, Hapstone, for your engineering excellence in creating this precision sharpening system.
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Robert · September 11, 2026
This is my 2nd guided fix angled sharpener. This unit is awesome, it is very stiff and hardly has any flex during the sharpening process. I am getting sharper knives and more precise angles with this unit. I strongly recomment it.
Charlie